研究者詳細 - 石野　宏和

論文 - 石野　宏和

分割表示 326 件中 1 - 20 件目／全件表示 >>

Requirements on the gain calibration for LiteBIRD polarisation data with blind component separation 査読

F. Carralot, A. Carones, N. Krachmalnicoff, T. Ghigna, A. Novelli, L. Pagano, F. Piacentini, C. Baccigalupi, D. Adak, A. Anand, J. Aumont, S. Azzoni, M. Ballardini, A.J. Banday, R.B. Barreiro, N. Bartolo, S. Basak, A. Basyrov, M. Bersanelli, M. Bortolami, T. Brinckmann, F. Cacciotti, P. Campeti, E. Carinos, F.J. Casas, K. Cheung, L. Clermont, F. Columbro, G. Conenna, G. Coppi, A. Coppolecchia, F. Cuttaia, P. de Bernardis, M. De Lucia, S. Della Torre, E. Di Giorgi, P. Diego-Palazuelos, T. Essinger-Hileman, E. Ferreira, F. Finelli, C. Franceschet, G. Galloni, M. Galloway, M. Gervasi, R.T. Génova-Santos, S. Giardiello, C. Gimeno-Amo, E. Gjerløw, A. Gruppuso, M. Hazumi, S. Henrot-Versillé, L.T. Hergt, E. Hivon, H. Ishino, B. Jost, K. Kohri, L. Lamagna, C. Leloup, M. Lembo, F. Levrier, A.I. Lonappan, M. López-Caniego, G. Luzzi, J. Macias-Perez, E. Martínez-González, S. Masi, S. Matarrese, T. Matsumura, S. Micheli, M. Monelli, L. Montier, G. Morgante, B. Mot, L. Mousset, Y. Nagano, R. Nagata, T. Namikawa, P. Natoli, I. Obata, A. Occhiuzzi, A. Paiella, D. Paoletti, G. Pascual-Cisneros, G. Patanchon, V. Pavlidou, G. Pisano, G. Polenta, L. Porcelli, G. Puglisi, N. Raffuzzi, M. Remazeilles, J.A. Rubiño-Martín, M. Ruiz-Granda, J. Sanghavi, D. Scott, M. Shiraishi, R.M. Sullivan, Y. Takase, K. Tassis, L. Terenzi, M. Tomasi, M. Tristram, L. Vacher, B. van Tent, P. Vielva, G. Weymann-Despres, E.J. Wollack, M. Zannoni, Y. Zhou

Journal of Cosmology and Astroparticle Physics 2025 ( 01 ) 019 - 019 2025年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IOP Publishing

Abstract

The detection of primordial B modes of the cosmic microwave background (CMB) could provide information about the early stages of the Universe's evolution. The faintness of this signal requires exquisite calibration accuracy and control of instrumental systematic effects which otherwise could bias the measurements. In this work, we study the impact of an imperfect relative polarisation gain calibration on the recovered value of the tensor-to-scalar ratio r for the LiteBIRD experiment, through the application of the blind Needlet Internal Linear Combination (NILC) foreground-cleaning method. We derive requirements on the relative calibration accuracy of the overall polarisation gain (Δg_ν ) for each LiteBIRD frequency channel. Our results show that minimum variance techniques, as NILC, are less sensitive to systematic gain calibration uncertainties compared to a parametric approach, if the latter is not equipped with a proper modelling of these instrumental effects. In this study, the most stringent requirements are found in the channels where the CMB signal is relatively brighter, with the tightest constraints at 166 GHz (Δg_ν ≈ 0.16%). This differs from the outcome of an analogous analysis performed with a parametric method, where the tightest requirements are obtained for the foreground-dominated channels. Gain calibration uncertainties, corresponding to the derived requirements, are then simultaneously propagated into all frequency channels. By doing so, we find that the overall impact on estimated r is lower than the total gain systematic budget for LiteBIRD approximately by a factor 5, due to the correlations of the impacts of gain calibration uncertainties in different frequency channels. In order to decouple the systematic effect from the specific choice of the model, we derive the requirements assuming constant spectral parameters for the foreground emission. To assess the robustness of the obtained results against more realistic scenarios, we repeat the analysis assuming sky models of intermediate and high complexity. In these further cases, we adopt an optimised NILC pipeline, called the Multi-Clustering NILC (MC-NILC). We find that the impact of gain calibration uncertainties on r is lower than the LiteBIRD gain systematics budget for the intermediate-complexity sky model. For the high-complexity case, instead, it would be necessary to tighten the requirements by a factor 1.8.

DOI： 10.1088/1475-7516/2025/01/019

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その他リンク： https://iopscience.iop.org/article/10.1088/1475-7516/2025/01/019/pdf

Multi-dimensional optimisation of the scanning strategy for the LiteBIRD space mission 査読

Journal of Cosmology and Astroparticle Physics 12 ( 036 ) 1 - 45 2024年12月

The LiteBIRD mission to explore cosmic inflation 査読

T. Ghigna, A. Adler, K. Aizawa, H. Akamatsu, R. Akizawa, E. Allys, A. Anand, J. Aumont, J. Austermann, S. Azzoni, C. Baccigalupi, M. Ballardini, A. J. Banday, R. B. Barreiro, N. Bartolo, S. Basak, A. Basyrov, S. Beckman, M. Bersanelli, M. Bortolami, F. Bouchet, T. Brinckmann, P. Campeti, E. Carinos, A. Carones, F. J. Casas, K. Cheung, Y. Chinone, L. Clermont, F. Columbro, A. Coppolecchia, D. Curtis, P. de Bernardis, T. de Haan, E. de la Hoz, M. De Petris, S. Della Torre, G. Delle Monache, E. Di Giorgi, C. Dickinson, P. Diego-Palazuelos, J. J. Diaz Garcia, M. Dobbs, T. Dotani, G. D'Alessandro, H. K. Eriksen, J. Errard, T. Essinger-Hileman, N. Farias, E. Ferreira, C. Franceschet, U. Fuskeland, G. Galloni, M. Galloway, K. Ganga, M. Gerbino, M. Gervasi, R. T. Genova-Santos, S. Giardiello, C. Gimeno-Amo, E. Gjerlow, R. Gonzalez Gonzalez, L. Grandsire, A. Gruppuso, N. W. Halverson, P. Hargrave, S. E. Harper, M. Hazumi, S. Henrot-Versille, L. T. Hergt, D. Herranz, E. Hivon, R. A. Hlozek, T. D. Hoang, J. Hubmayr, K. Ichiki, K. Ikuma, H. Ishino, G. Jaehnig, B. Jost, K. Kohri, K. Konishi, L. Lamagna, M. Lattanzi, C. Leloup, F. Levrier, A. Lonappan, G. Luzzi, J. Macias-Perez, B. Maffei, E. Marchitelli, E. Martinez-Gonzalez, S. Masi, S. Matarrese, T. Matsumura, S. Micheli, M. Migliaccio, M. Monelli, L. Montier, G. Morgante, L. Mousset, Y. Nagano, R. Nagata, P. Natoli, A. Novelli, F. Noviello, Obata, I, A. Occhiuzzi, K. Odagiri, R. Omae, L. Pagano, A. Paiella, D. Paoletti, G. Pascual-Cisneros, G. Patanchon, Pavlidou, V, F. Piacentini, M. Piat, G. Piccirilli, M. Pinchera, G. Pisano, L. Porcelli, N. Raffuzzi, C. Raum, M. Remazeilles, A. Ritacco, J. Rubino-Martin, M. Ruiz-Granda, Y. Sakurai, G. Savini, D. Scott, Y. Sekimoto, M. Shiraishi, G. Signorelli, S. L. Stever, R. M. Sullivan, A. Suzuki, R. Takaku, H. Takakura, S. Takakura, Y. Takase, A. Tartari, K. Tassis, K. L. Thompson, M. Tomasi, M. Tristram, C. Tucker, L. Vacher, B. van Tent, P. Vielva, K. Watanuki, I. K. Wehus, B. Westbrook, G. Weymann-Despres, B. Winter, E. J. Wollack, A. Zacchei, M. Zannoni, Y. Zhou

SPACE TELESCOPES AND INSTRUMENTATION 2024: OPTICAL, INFRARED, AND MILLIMETER WAVE 13092 81 - 81 2024年9月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：SPIE-INT SOC OPTICAL ENGINEERING

LiteBIRD, the next-generation cosmic microwave background (CMB) experiment, aims for a launch in Japan's fiscal year 2032, marking a major advancement in the exploration of primordial cosmology and fundamental physics. Orbiting the Sun-Earth Lagrangian point L2, this JAXA-led strategic L-class mission will conduct a comprehensive mapping of the CMB polarization across the entire sky. During its 3-year mission, LiteBIRD will employ three telescopes within 15 unique frequency bands (ranging from 34 through 448 GHz), targeting a sensitivity of 2.2 mu K-arcmin and a resolution of 0.5 degrees at 100 GHz. Its primary goal is to measure the tensor-to-scalar ratio r with an uncertainty delta r = 0.001, including systematic errors and margin. If r >= 0.01, LiteBIRD expects to achieve a > 5 sigma detection in the l = 2-10 and l = 11-200 ranges separately, providing crucial insight into the early Universe. We describe LiteBIRD's scientific objectives, the application of systems engineering to mission requirements, the anticipated scientific impact, and the operations and scanning strategies vital to minimizing systematic effects. We will also highlight LiteBIRD's synergies with concurrent CMB projects.

DOI： 10.1117/12.3021377

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LiteBIRD science goals and forecasts: primordial magnetic fields 査読

D. Paoletti, J.A. Rubino-Martin, M. Shiraishi, D. Molinari, J. Chluba, F. Finelli, C. Baccigalupi, J. Errard, A. Gruppuso, A.I. Lonappan, A. Tartari, E. Allys, A. Anand, J. Aumont, M. Ballardini, A.J. Banday, R.B. Barreiro, N. Bartolo, M. Bersanelli, M. Bortolami, T. Brinckmann, E. Calabrese, P. Campeti, A. Carones, F.J. Casas, K. Cheung, L. Clermont, F. Columbro, G. Conenna, A. Coppolecchia, F. Cuttaia, G. D'Alessandro, P. de Bernardis, S. Della Torre, P. Diego-Palazuelos, H.K. Eriksen, U. Fuskeland, G. Galloni, M. Galloway, M. Gerbino, M. Gervasi, T. Ghigna, S. Giardiello, C. Gimeno-Amo, E. Gjerløw, F. Grupp, M. Hazumi, S. Henrot-Versillé, L.T. Hergt, E. Hivon, K. Ichiki, H. Ishino, K. Kohri, E. Komatsu, N. Krachmalnicoff, L. Lamagna, M. Lattanzi, M. Lembo, F. Levrier, M. López-Caniego, G. Luzzi, E. Martínez-González, S. Masi, S. Matarrese, S. Micheli, M. Migliaccio, M. Monelli, L. Montier, G. Morgante, L. Mousset, R. Nagata, T. Namikawa, P. Natoli, A. Novelli, I. Obata, A. Occhiuzzi, K. Odagiri, L. Pagano, A. Paiella, G. Pascual-Cisneros, F. Piacentini, G. Piccirilli, M. Remazeilles, A. Ritacco, M. Ruiz-Granda, Y. Sakurai, D. Scott, S.L. Stever, R.M. Sullivan, Y. Takase, K. Tassis, L. Terenzi, M. Tristram, L. Vacher, B. van Tent, P. Vielva, I.K. Wehus, G. Weymann-Despres, M. Zannoni, Y. Zhou

Journal of Cosmology and Astroparticle Physics 2024 ( 07 ) 086 - 086 2024年7月

掲載種別：研究論文（学術雑誌）出版者・発行元：IOP Publishing

Abstract

We present detailed forecasts for the constraints on the characteristics of primordial magnetic fields (PMFs) generated prior to recombination that will be obtained with the LiteBIRD satellite. The constraints are driven by some of the main physical effects of PMFs on the CMB anisotropies: the gravitational effects of magnetically-induced perturbations; the effects on the thermal and ionization history of the Universe; the Faraday rotation imprint on the CMB polarization spectra; and the non-Gaussianities induced in polarization anisotropies. LiteBIRD represents a sensitive probe for PMFs.We explore different levels of complexity, for LiteBIRD data and PMF configurations, accounting for possible degeneracies with primordial gravitational waves from inflation. By exploiting all the physical effects, LiteBIRD will be able to improve the current limit on PMFs at intermediate and large scales coming from Planck. In particular, thanks to its accurate B-mode polarization measurement, LiteBIRD will improve the constraints on infrared configurations for the gravitational effect, giving B ^{n _B=-2.9} _{1 Mpc}< 0.8 nG at 95% C.L., potentially opening the possibility to detect nanogauss fields with high significance. We also observe a significant improvement in the limits when marginalized over the spectral index, B ^{n _Bmarg} _{1 Mpc}< 2.2 nG at 95 % C.L. From the thermal history effect, which relies mainly on E-mode polarization data, we obtain a significant improvement for all PMF configurations, with the marginalized case, √⟨B ²⟩^marg<0.50 nG at 95 % C.L. Faraday rotation constraints will take advantage of the wide frequency coverage of LiteBIRD and the high sensitivity in B modes, improving the limits by orders of magnitude with respect to current results, B ^{n _B=-2.9} _{1 Mpc} < 3.2 nG at 95 % C.L. Finally, non-Gaussianities of the B-mode polarization can probe PMFs at the level of 1 nG, again significantly improving the current bounds from Planck. Altogether our forecasts represent a broad collection of complementary probes based on widely tested methodologies, providing conservative limits on PMF characteristics that will be achieved with the LiteBIRD satellite.

DOI： 10.1088/1475-7516/2024/07/086

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その他リンク： https://iopscience.iop.org/article/10.1088/1475-7516/2024/07/086/pdf

Impact of beam far side-lobe knowledge in the presence of foregrounds for LiteBIRD 査読

C. Leloup, G. Patanchon, J. Errard, C. Franceschet, J.E. Gudmundsson, S. Henrot-Versillé, H. Imada, H. Ishino, T. Matsumura, G. Puglisi, W. Wang, A. Adler, J. Aumont, R. Aurlien, C. Baccigalupi, M. Ballardini, A.J. Banday, R.B. Barreiro, N. Bartolo, A. Basyrov, M. Bersanelli, D. Blinov, M. Bortolami, T. Brinckmann, P. Campeti, A. Carones, F. Carralot, F.J. Casas, K. Cheung, L. Clermont, F. Columbro, G. Conenna, A. Coppolecchia, F. Cuttaia, N. Dachlythra, G. D'Alessandro, P. de Bernardis, T. de Haan, M. De Petris, S. Della Torre, P. Diego-Palazuelos, H.K. Eriksen, F. Finelli, U. Fuskeland, G. Galloni, M. Galloway, M. Georges, M. Gerbino, M. Gervasi, R.T. Génova-Santos, T. Ghigna, S. Giardiello, C. Gimeno-Amo, E. Gjerløw, A. Gruppuso, M. Hazumi, L.T. Hergt, D. Herranz, E. Hivon, T.D. Hoang, B. Jost, K. Kohri, N. Krachmalnicoff, A.T. Lee, M. Lembo, F. Levrier, A.I. Lonappan, M. López-Caniego, J. Macias-Perez, E. Martínez-González, S. Masi, S. Matarrese, S. Micheli, M. Monelli, L. Montier, G. Morgante, B. Mot, L. Mousset, T. Namikawa, P. Natoli, A. Novelli, F. Noviello, I. Obata, K. Odagiri, L. Pagano, A. Paiella, D. Paoletti, G. Pascual-Cisneros, V. Pavlidou, F. Piacentini, G. Piccirilli, G. Pisano, G. Polenta, N. Raffuzzi, M. Remazeilles, A. Ritacco, A. Rizzieri, M. Ruiz-Granda, Y. Sakurai, M. Shiraishi, S.L. Stever, Y. Takase, K. Tassis, L. Terenzi, K.L. Thompson, M. Tristram, L. Vacher, P. Vielva, I.K. Wehus, G. Weymann-Despres, M. Zannoni, Y. Zhou

Journal of Cosmology and Astroparticle Physics 2024 ( 06 ) 011 - 011 2024年6月

担当区分：責任著者掲載種別：研究論文（学術雑誌）出版者・発行元：IOP Publishing

Abstract

We present a study of the impact of a beam far side-lobe lack of knowledge on the measurement of the Cosmic Microwave Background B-mode signal at large scale. Beam far side-lobes induce a mismatch in the transfer function of Galactic foregrounds between the dipole and higher multipoles which degrads the performances of component separation methods. This leads to foreground residuals in the CMB map. It is expected to be one of the main source of systematic effects in future CMB polarization observations. Thus, it becomes crucial for all-sky survey missions to take into account the interplays between beam systematic effects and all the data analysis steps. LiteBIRD is the ISAS/JAXA second strategic large-class satellite mission and is dedicated to target the measurement of CMB primordial B modes by reaching a sensitivity on the tensor-to-scalar ratio r of σ(r) ≤ 10^-3 assuming r = 0. The primary goal of this paper is to provide the methodology and develop the framework to carry out the end-to-end study of beam far side-lobe effects for a space-borne CMB experiment. We introduce uncertainties in the beam model, and propagate the beam effects through all the steps of the analysis pipeline, most importantly including component separation, up to the cosmological results in the form of a bias δr. As a demonstration of our framework, we derive requirements on the calibration and modeling for the LiteBIRD's beams under given assumptions on design, simulation, component separation method and allocated error budget. In particular, we assume a parametric method of component separation with no mitigation of the far side-lobes effect at any stage of the analysis pipeline. We show that δr is mostly due to the integrated fractional power difference between the estimated beams and the true beams in the far side-lobes region, with little dependence on the actual shape of the beams, for low enough δr. Under our set of assumptions, in particular considering the specific foreground cleaning method we used, we find that the integrated fractional power in the far side-lobes should be known at the level of ∼ 10^-4, to achieve the required limit on the bias δr < 1.9 × 10^-5. The framework and tools developed for this study can be easily adapted to provide requirements under different design, data analysis frameworks and for other future space-borne experiments, such as PICO or CMB-Bharat. We further discuss the limitations of this framework and potential extensions to circumvent them.

DOI： 10.1088/1475-7516/2024/06/011

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その他リンク： https://iopscience.iop.org/article/10.1088/1475-7516/2024/06/011/pdf

Effect of instrumental polarization with a half-wave plate on the B-mode signal: prediction and correction 査読

Guillaume Patanchon, Hiroaki Imada, Hirokazu Ishino, Tomotake Matsumura

Journal of Cosmology and Astroparticle Physics 2024 ( 04 ) 074 - 074 2024年4月

担当区分：責任著者掲載種別：研究論文（学術雑誌）出版者・発行元：IOP Publishing

Abstract

We study the effect of incident unpolarized signal converted to polarized light produced by a realistic half-wave plate (HWP) and evaluate the impact of the effect in the measurement of Cosmic Microwave Background (CMB) B-mode polarization signal targeting to probe the tensor-to-scalar ratio r. The HWP is modeled with the Mueller formalism, and coefficients are decomposed for any incident angle into harmonics of the HWP rotation frequency due to azimuthal angle dependence. Although we use a general formalism, band-averaged matrix coefficients are calculated as an example for a 9-layer sapphire HWP using EM propagation simulations. We perform simulations of multi-detector observations in a band centered at 140 GHz using LiteBIRD instrumental configuration. We show both theoretically and with the simulations that most of the artefacts on Stokes parameter maps are produced by the dipole leakage on B-modes induced by the fourth harmonics M_QI ^(4f) and M_UI ^(4f). The resulting effect is strongly linked to the spin-2 focal plane scanning cross linking parameters. We develop a maximum likelihood-based method to correct the IP leakage by joint fitting of the Mueller matrix coefficients as well as the Stokes parameter maps. We show that the residual leakage after correction leads to an additional noise limited uncertainty on r of the order of 10^-7, independently of the value of the Mueller matrix coefficients. We discuss the impact of the monopole signal and the potential coupling with other systematic effects such as gain variations and detector nonlinearities.

DOI： 10.1088/1475-7516/2024/04/074

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その他リンク： https://iopscience.iop.org/article/10.1088/1475-7516/2024/04/074/pdf

Search for Astrophysical Electron Antineutrinos in Super-Kamiokande with 0.01% Gadolinium-loaded Water 査読

M. Harada, K. Abe, C. Bronner, Y. Hayato, K. Hiraide, K. Hosokawa, K. Ieki, M. Ikeda, J. Kameda, Y. Kanemura, R. Kaneshima, Y. Kashiwagi, Y. Kataoka, S. Miki, S. Mine, M. Miura, S. Moriyama, Y. Nakano, M. Nakahata, S. Nakayama, Y. Noguchi, K. Okamoto, K. Sato, H. Sekiya, H. Shiba, K. Shimizu, M. Shiozawa, Y. Sonoda, Y. Suzuki, A. Takeda, Y. Takemoto, A. Takenaka, H. Tanaka, S. Watanabe, T. Yano, S. Han, T. Kajita, K. Okumura, T. Tashiro, T. Tomiya, X. Wang, S. Yoshida, G. D. Megias, P. Fernandez, L. Labarga, N. Ospina, B. Zaldivar, B. W. Pointon, E. Kearns, J. L. Raaf, L. Wan, T. Wester, J. Bian, N. J. Griskevich, S. Locke, M. B. Smy, H. W. Sobel, V. Takhistov, A. Yankelevich, J. Hill, S. H. Lee, D. H. Moon, R. G. Park, B. Bodur, K. Scholberg, C. W. Walter, A. Beauchêne, O. Drapier, A. Giampaolo, Th. A. Mueller, A. D. Santos, P. Paganini, B. Quilain, T. Ishizuka, T. Nakamura, J. S. Jang, J. G. Learned, K. Choi, N. Iovine, S. Cao, L. H. V. Anthony, D. Martin, M. Scott, A. A. Sztuc, Y. Uchida, V. Berardi, M. G. Catanesi, E. Radicioni, N. F. Calabria, A. Langella, L. N. Machado, G. De Rosa, G. Collazuol, F. Iacob, M. Lamoureux, M. Mattiazzi, L. Ludovici, M. Gonin, G. Pronost, C. Fujisawa, Y. Maekawa, Y. Nishimura, R. Okazaki, R. Akutsu, M. Friend, T. Hasegawa, T. Ishida, T. Kobayashi, M. Jakkapu, T. Matsubara, T. Nakadaira, K. Nakamura, Y. Oyama, K. Sakashita, T. Sekiguchi, T. Tsukamoto, N. Bhuiyan, G. T. Burton, F. Di Lodovico, J. Gao, A. Goldsack, T. Katori, J. Migenda, Z. Xie, S. Zsoldos, Y. Kotsar, H. Ozaki, A. T. Suzuki, Y. Takagi, Y. Takeuchi, J. Feng, L. Feng, J. R. Hu, Z. Hu, T. Kikawa, M. Mori, T. Nakaya, R. A. Wendell, K. Yasutome, S. J. Jenkins, N. McCauley, P. Mehta, A. Tarrant, Y. Fukuda, Y. Itow, H. Menjo, K. Ninomiya, J. Lagoda, S. M. Lakshmi, M. Mandal, P. Mijakowski, Y. S. Prabhu, J. Zalipska, M. Jia, J. Jiang, C. K. Jung, M. J. Wilking, C. Yanagisawa, Y. Hino, H. Ishino, H. Kitagawa, Y. Koshio, F. Nakanishi, S. Sakai, T. Tada, T. Tano, G. Barr, D. Barrow, L. Cook, S. Samani, D. Wark, A. Holin, F. Nova, B. S. Yang, J. Y. Yang, J. Yoo, J. E. P. Fannon, L. Kneale, M. Malek, J. M. McElwee, M. D. Thiesse, L. F. Thompson, S. T. Wilson, H. Okazawa, S. B. Kim, E. Kwon, J. W. Seo, I. Yu, A. K. Ichikawa, K. D. Nakamura, S. Tairafune, K. Nishijima, K. Nakagiri, Y. Nakajima, S. Shima, N. Taniuchi, E. Watanabe, M. Yokoyama, P. de Perio, K. Martens, K. M. Tsui, M. R. Vagins, J. Xia, M. Kuze, S. Izumiyama, R. Matsumoto, M. Ishitsuka, H. Ito, T. Kinoshita, R. Matsumoto, Y. Ommura, N. Shigeta, M. Shinoki, T. Suganuma, K. Yamauchi, J. F. Martin, H. A. Tanaka, T. Towstego, R. Gaur, V. Gousy-Leblanc, M. Hartz, A. Konaka, X. Li, N. W. Prouse, S. Chen, B. D. Xu, B. Zhang, M. Posiadala-Zezula, S. B. Boyd, R. Edwards, D. Hadley, M. Nicholson, M. O’Flaherty, B. Richards, A. Ali, B. Jamieson, Ll. Marti, A. Minamino, G. Pintaudi, S. Sano, S. Suzuki, K. Wada

The Astrophysical Journal Letters 951 ( 2 ) L27 - L27 2023年7月

掲載種別：研究論文（学術雑誌）出版者・発行元：American Astronomical Society

Abstract

We report the first search result for the flux of astrophysical electron antineutrinos for energies ${ \mathcal O }(10)\,\mathrm{MeV}$ in the gadolinium-loaded Super-Kamiokande (SK) detector. In 2020 June, gadolinium was introduced to the ultrapure water of the SK detector in order to detect neutrons more efficiently. In this new experimental phase, SK-Gd, we can search for electron antineutrinos via inverse beta decay with efficient background rejection thanks to the high efficiency of the neutron tagging technique. In this paper, we report the result for the initial stage of SK-Gd, during 2020 August 26, and 2022 June 1 with a 22.5 × 552 kton · day exposure at 0.01% Gd mass concentration. No significant excess over the expected background in the observed events is found for the neutrino energies below 31.3 MeV. Thus, the flux upper limits are placed at the 90% confidence level. The limits and sensitivities are already comparable with the previous SK result with pure water (22.5 × 2970 kton · day) owing to the enhanced neutron tagging. Operation with Gd increased to 0.03% started in 2022 June.

DOI： 10.3847/2041-8213/acdc9e

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その他リンク： https://iopscience.iop.org/article/10.3847/2041-8213/acdc9e/pdf

Performance of a 200 mm Diameter Achromatic HWP with Laser-Ablated Sub-Wavelength Structures 査読

R. Takaku, T. Ghigna, S. Hanany, Y. Hoshino, H. Ishino, N. Katayama, K. Komatsu, K. Konishi, M. Kuwata-Gonokami, T. Matsumura, H. Sakurai, Y. Sakurai, Q. Wen, N. Y. Yamasaki, J. Yumoto

Journal of Low Temperature Physics 2022年12月

Sensitivity Modeling for LiteBIRD 査読

T. Hasebe, P. A. R. Ade, A. Adler, E. Allys, D. Alonso, K. Arnold, D. Auguste, J. Aumont, R. Aurlien, J. Austermann, S. Azzoni, C. Baccigalupi, A. J. Banday, R. Banerji, R. B. Barreiro, N. Bartolo, S. Basak, E. Battistelli, L. Bautista, J. Beall, D. Beck, S. Beckman, K. Benabed, J. Bermejo-Ballesteros, M. Bersanelli, J. Bonis, J. Borrill, F. Bouchet, F. Boulanger, S. Bounissou, M. Brilenkov, M. L. Brown, M. Bucher, E. Calabrese, M. Calvo, P. Campeti, A. Carones, F. J. Casas, A. Catalano, A. Challinor, V. Chan, K. Cheung, Y. Chinone, J. Cliche, F. Columbro, W. Coulton, J. Cubas, A. Cukierman, D. Curtis, G. D’Alessandro, K. Dachlythra, P. de Bernardis, T. de Haan, E. de la Hoz, M. De Petris, S. Della Torre, C. Dickinson, P. Diego-Palazuelos, M. Dobbs, T. Dotani, D. Douillet, L. Duband, A. Ducout, S. Duff, J. M. Duval, K. Ebisawa, T. Elleflot, H. K. Eriksen, J. Errard, T. Essinger-Hileman, F. Finelli, R. Flauger, C. Franceschet, U. Fuskeland, S. Galli, M. Galloway, K. Ganga, J. R. Gao, R. T. Genova-Santos, M. Gerbino, M. Gervasi, T. Ghigna, S. Giardiello, E. Gjerløw, M. L. Gradziel, J. Grain, L. Grandsire, F. Grupp, A. Gruppuso, J. E. Gudmundsson, N. W. Halverson, J. Hamilton, P. Hargrave, M. Hasegawa, M. Hattori, M. Hazumi, S. Henrot-Versillé, L. T. Hergt, D. Herman, D. Herranz, C. A. Hill, G. Hilton, E. Hivon, R. A. Hlozek, T. D. Hoang, A. L. Hornsby, Y. Hoshino, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, K. Ishimura, H. Ishino, G. Jaehnig, M. Jones, T. Kaga, S. Kashima, N. Katayama, A. Kato, T. Kawasaki, R. Keskitalo, T. Kisner, Y. Kobayashi, N. Kogiso, A. Kogut, K. Kohri, E. Komatsu, K. Komatsu, K. Konishi, N. Krachmalnicoff, I. Kreykenbohm, C. L. Kuo, A. Kushino, L. Lamagna, J. V. Lanen, G. Laquaniello, M. Lattanzi, A. T. Lee, C. Leloup, F. Levrier, E. Linder, T. Louis, G. Luzzi, J. Macias-Perez, T. Maciaszek, B. Maffei, D. Maino, M. Maki, S. Mandelli, M. Maris, E. Martínez-González, S. Masi, M. Massa, S. Matarrese, F. T. Matsuda, T. Matsumura, L. Mele, A. Mennella, M. Migliaccio, Y. Minami, K. Mitsuda, A. Moggi, A. Monfardini, J. Montgomery, L. Montier, G. Morgante, B. Mot, Y. Murata, J. A. Murphy, M. Nagai, Y. Nagano, T. Nagasaki, R. Nagata, S. Nakamura, R. Nakano, T. Namikawa, F. Nati, P. Natoli, S. Nerval, T. Nishibori, H. Nishino, F. Noviello, C. O’Sullivan, K. Odagiri, H. Ogawa, H. Ogawa, S. Oguri, H. Ohsaki, I. S. Ohta, N. Okada, N. Okada, L. Pagano, A. Paiella, D. Paoletti, A. Passerini, G. Patanchon, V. Pelgrim, J. Peloton, F. Piacentini, M. Piat, G. Pisano, G. Polenta, D. Poletti, T. Prouvé, G. Puglisi, D. Rambaud, C. Raum, S. Realini, M. Reinecke, M. Remazeilles, A. Ritacco, G. Roudil, J. Rubino-Martin, M. Russell, H. Sakurai, Y. Sakurai, M. Sandri, M. Sasaki, G. Savini, D. Scott, J. Seibert, Y. Sekimoto, B. Sherwin, K. Shinozaki, M. Shiraishi, P. Shirron, G. Signorelli, G. Smecher, F. Spinella, S. Stever, R. Stompor, S. Sugiyama, R. Sullivan, A. Suzuki, J. Suzuki, T. L. Svalheim, E. Switzer, R. Takaku, H. Takakura, S. Takakura, Y. Takase, Y. Takeda, A. Tartari, D. Tavagnacco, A. Taylor, E. Taylor, Y. Terao, J. Thermeau, H. Thommesen, K. L. Thompson, B. Thorne, T. Toda, M. Tomasi, M. Tominaga, N. Trappe, M. Tristram, M. Tsuji, M. Tsujimoto, C. Tucker, J. Ullom, L. Vacher, G. Vermeulen, P. Vielva, F. Villa, M. Vissers, N. Vittorio, B. Wandelt, W. Wang, K. Watanuki, I. K. Wehus, J. Weller, B. Westbrook, J. Wilms, B. Winter, E. J. Wollack, N. Y. Yamasaki, T. Yoshida, J. Yumoto, A. Zacchei, M. Zannoni, A. Zonca

Journal of Low Temperature Physics 211 ( 5-6 ) 384 - 397 2022年12月

Probing Cosmic Inflation with the LiteBIRD Cosmic Microwave Background Polarization Survey 招待査読

E Allys, K Arnold, J Aumont, R Aurlien, S Azzoni, C Baccigalupi, A J Banday, R Banerji, R B Barreiro, N Bartolo, L Bautista, D Beck, S Beckman, M Bersanelli, F Boulanger, M Brilenkov, M Bucher, E Calabrese, P Campeti, A Carones, F J Casas, A Catalano, V Chan, K Cheung, Y Chinone, S E Clark, F Columbro, G D’Alessandro, P de Bernardis, T de Haan, E de la Hoz, M De Petris, S Della Torre, P Diego-Palazuelos, M Dobbs, T Dotani, J M Duval, T Elleflot, H K Eriksen, J Errard, T Essinger-Hileman, F Finelli, R Flauger, C Franceschet, U Fuskeland, M Galloway, K Ganga, M Gerbino, M Gervasi, R T Génova-Santos, T Ghigna, S Giardiello, E Gjerløw, J Grain, F Grupp, A Gruppuso, J E Gudmundsson, N W Halverson, P Hargrave, T Hasebe, M Hasegawa, M Hazumi, S Henrot-Versillé, B Hensley, L T Hergt, D Herman, E Hivon, R A Hlozek, A L Hornsby, Y Hoshino, J Hubmayr, K Ichiki, T Iida, H Imada, H Ishino, G Jaehnig, N Katayama, A Kato, R Keskitalo, T Kisner, Y Kobayashi, A Kogut, K Kohri, E Komatsu, K Komatsu, K Konishi, N Krachmalnicoff, C L Kuo, L Lamagna, M Lattanzi, A T Lee, C Leloup, F Levrier, E Linder, G Luzzi, J Macias-Perez, T Maciaszek, B Maffei, D Maino, S Mandelli, E Martínez-González, S Masi, M Massa, S Matarrese, F T Matsuda, T Matsumura, L Mele, M Migliaccio, Y Minami, A Moggi, J Montgomery, L Montier, G Morgante, B Mot, Y Nagano, T Nagasaki, R Nagata, R Nakano, T Namikawa, F Nati, P Natoli, S Nerval, F Noviello, K Odagiri, S Oguri, H Ohsaki, L Pagano, A Paiella, D Paoletti, A Passerini, G Patanchon, F Piacentini, M Piat, G Polenta, D Poletti, T Prouvé, G Puglisi, D Rambaud, C Raum, S Realini, M Reinecke, M Remazeilles, A Ritacco, G Roudil, J A Rubino-Martin, M Russell, H Sakurai, Y Sakurai, M Sasaki, D Scott, Y Sekimoto, K Shinozaki, M Shiraishi, P Shirron, G Signorelli, F Spinella, S Stever, R Stompor, S Sugiyama, R M Sullivan, A Suzuki, T L Svalheim, E Switzer, R Takaku, H Takakura, Y Takase, A Tartari, Y Terao, J Thermeau, H Thommesen, K L Thompson, M Tomasi, M Tominaga, M Tristram, M Tsuji, M Tsujimoto, L Vacher, P Vielva, N Vittorio, W Wang, K Watanuki, I K Wehus, J Weller, B Westbrook, J Wilms, E J Wollack, J Yumoto, M Zannoni

Progress of Theoretical and Experimental Physics 2023 ( 4 ) 2022年11月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Oxford University Press (OUP)

Abstract

LiteBIRD the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission for primordial cosmology and fundamental physics. The Japan Aerospace Exploration Agency (JAXA) selected LiteBIRD in May 2019 as a strategic large-class (L-class) mission, with an expected launch in the late 2020s using JAXA’s H3 rocket. LiteBIRD is planned to orbit the Sun-Earth Lagrangian point L2, where it will map the cosmic microwave background (CMB) polarization over the entire sky for three years, with three telescopes in 15 frequency bands between 34 and 448 GHz, to achieve an unprecedented total sensitivity of 2.2 μK-arcmin, with a typical angular resolution of 0.5○ at 100 GHz. The primary scientific objective of LiteBIRD is to search for the signal from cosmic inflation, either making a discovery or ruling out well-motivated inflationary models. The measurements of LiteBIRD will also provide us with insight into the quantum nature of gravity and other new physics beyond the standard models of particle physics and cosmology. We provide an overview of the LiteBIRD project, including scientific objectives, mission and system requirements, operation concept, spacecraft and payload module design, expected scientific outcomes, potential design extensions and synergies with other projects. Subject Index LiteBIRD cosmic inflation, cosmic microwave background, B-mode polarization, primordial gravitational waves, quantum gravity, space telescope

DOI： 10.1093/ptep/ptac150

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Design of the On-Board Data Compression for the Bolometer Data of LiteBIRD 査読

Mayu Tominaga, Masahiro Tsujimoto, Graeme Smecher, Hirokazu Ishino

JOURNAL OF LOW TEMPERATURE PHYSICS 209 ( 3-4 ) 686 - 692 2022年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：SPRINGER/PLENUM PUBLISHERS

LiteBIRD is a space-borne experiment dedicated to detecting large-scale B-mode anisotropies in the linear polarization of the Cosmic Microwave Background (CMB) predicted by the theory of inflation. It is planned to be launched in the late 2020s to the second Lagrange point (L2) of the Sun-Earth system. LiteBIRD will map the sky in 15 frequency bands. In comparison with Planck HFI, the previous lowtemperature bolometer-based satellite for CMB observations, the number of detector has increased by two orders of magnitude, up to similar to 5000 detectors in total. The data rate is 19 Hz from each detector. The bandpass to the ground is limited to 10 Mbps using the X-band for a few hours per day. These require the data to be compressed by more than 50%. The exact value depends on how much information entropy is contained in the real data. We have thus evaluated the compression by simulating the time-ordered data of polarization-sensitive bolometers. The foreground emission, detector noise, cosmic ray glitches, leakage from the CMB intensity to polarization, etc., are simulated. We investigated several algorithms and demonstrated that the required compression ratio can be achieved by some of them. We describe the details of this evaluation and propose algorithms that can be employed in the on-board digital electronics of LiteBIRD.

DOI： 10.1007/s10909-022-02839-0

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Detailed study of HWP non-idealities and their impact on future measurements of CMB polarization anisotropies from space 査読

S. Giardiello, M. Gerbino, L. Pagano, J. Errard, A. Gruppuso, H. Ishino, M. Lattanzi, P. Natoli, G. Patanchon, F. Piacentini, G. Pisano

Astronomy & Astrophysics 658 A15 - A15 2022年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：EDP Sciences

We study the propagation of a specific class of instrumental systematics to the reconstruction of the B-mode power spectrum of the cosmic microwave background (CMB). We focus on the non-idealities of the half-wave plate (HWP), a polarization modulator that is to be deployed by future CMB experiments, such as the phase-A satellite mission LiteBIRD. We study the effects of non-ideal HWP properties, such as transmittance, phase shift, and cross-polarization. To this end, we developed a simple, yet stand-alone end-to-end simulation pipeline adapted to LiteBIRD. We analyzed the effects of a possible mismatch between the measured frequency profiles of HWP properties (used in the mapmaking stage of the pipeline) and the actual profiles (used in the sky-scanning step). We simulated single-frequency, CMB-only observations to emphasize the effects of non-idealities on the BB power spectrum. We also considered multi-frequency observations to account for the frequency dependence of HWP properties and the contribution of foreground emission. We quantified the systematic effects in terms of a bias Δr on the tensor-to-scalar ratio, r, with respect to the ideal case without systematic effects. We derived the accuracy requirements on the measurements of HWP properties by requiring Δr < 10⁻⁵ (1% of the expected LiteBIRD sensitivity on r). Our analysis is introduced by a detailed presentation of the mathematical formalism employed in this work, including the use of the Jones and Mueller matrix representations.

DOI： 10.1051/0004-6361/202141619

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Mechanical strength and millimeter-wave transmittance spectrum of stacked sapphire plates bonded by sodium silicate solution 査読

Takayuki Toda, Yuki Sakurai, Hirokazu Ishino, Tomotake Matsumura, Kunimoto Komatsu, Nobuhiko Katayama

JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS 8 ( 1 ) 2022年1月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS

The polarization modulator unit for the low-frequency telescope in LiteBIRD employs an achromatic half-wave plate (AHWP). It consists of five layers of a-cut sapphire plate, which are stacked based on a Pancharatnam recipe. In this way, the retardance of the AHWP is a half-wave over a bandwidth of 34 to 161 GHz. The diameter of a single sapphire plate is about 500 mm and the thickness is 5 mm. When a large-diameter AHWP is used for a space mission, it is important for the AHWP to survive launch vibration. A preliminary study indicates that the five-layer stacked HWP has a risk of breakage at the launch unless the five layers are glued together and mechanically treated as one disk. We report our investigation using a sodium silicate solution that can bond the sapphire plates. This technique has been previously investigated as a candidate of cryogenic bonding for a mirror material, including sapphire, of the gravitational wave experiments: LIGO, VIRGO, and KAGRA. We experimentally studied the mechanical strength of the bonded interface for two different surface conditions: polished and unpolished. We demonstrated that the tensile and shear strength >20 MPa for samples with a polished surface. This satisfied the requirement of 5.5 MPa derived from the mechanical simulation assuming a launch load of 30 G. We identified that samples glued on a polished surface exhibit higher strength than unpolished ones by a factor of 2 for tensile and 18 for shear strength. We measured the millimeter-wave transmittance between 90 and 140 GHz using sapphire plates with a diameter of 50 mm before and after bonding. We did not find any optical effects caused by the bonded interface within 2% error in transmittance, which originates from the measurement system. (C) 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)

DOI： 10.1117/1.JATIS.8.1.014008

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Assessment of the cosmic-ray impacts for LiteBIRD using Geant4 simulation

Mayu Tominaga, Masahiro Tsujimoto, Hirokazu Ishino, Samantha L. Stever, Serika Tsukatsune

SPACE TELESCOPES AND INSTRUMENTATION 2022: OPTICAL, INFRARED, AND MILLIMETER WAVE 12180 2022年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：SPIE-INT SOC OPTICAL ENGINEERING

LiteBIRD is a space-borne experiment dedicated to detecting large-scale B-mode anisotropies of the linear polarization of the cosmic microwave background (CMB) predicted by the theory of inflation. It is planned to be launched in the late 2020s to the second Lagrangean point of the Sun-Earth system and map the sky in 15 frequency bands using thousands of transition edge sensor bolometers. LiteBIRD will be exposed to the cosmic-ray radiation throughout its lifetime, which may lead to the degradation of the scientific performance. Energy deposition by cosmic rays upon the focal plane bolometer detectors is considered a serious source of systematic effects. For a quantitative assessment of the effect, we present the result of Geant4 simulations to estimate the energy deposited by cosmic rays into the focal plane. We simulated different cosmic-ray components using CAD-based spacecraft models. We derive the spatial and energy distribution of the particles in the focal plane.

DOI： 10.1117/12.2629759

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Search for tens of MeV neutrinos associated with gamma-ray bursts in Super-Kamiokande 査読

A Orii, K Abe, C Bronner, Y Hayato, M Ikeda, S Imaizumi, H Ito, J Kameda, Y Kataoka, Y Kato, Y Kishimoto, M Miura, S Moriyama, T Mochizuki, Y Nagao, M Nakahata, Y Nakajima, S Nakayama, T Okada, K Okamoto, G Pronost, H Sekiya, M Shiozawa, Y Sonoda, Y Suzuki, A Takeda, Y Takemoto, A Takenaka, H Tanaka, T Yano, S Han, T Kajita, K Okumura, T Tashiro, R Wang, J Xia, G D Megias, D Bravo-Berguño, L Labarga, Ll Marti, B Zaldivar, F, d M Blaszczyk, E Kearns, J L Raaf, J L Stone, L Wan, T Wester, B W Pointon, J Bian, N J Griskevich, W R Kropp, S Locke, S Mine, M B Smy, H W Sobel, V Takhistov, P Weatherly, K S Ganezer, J Hill, J Y Kim, I T Lim, R G Park, B Bodur, K Scholberg, C W Walter, L Bernard, A Coffani, O Drapier, S El Hedri, A Giampaolo, M Gonin, Th A Mueller, P Paganini, B Quilain, T Ishizuka, T Nakamura, J S Jang, J G Learned, S Matsuno, L H V Anthony, R P Litchfield, A A Sztuc, Y Uchida, V Berardi, M G Catanesi, E Radicioni, N F Calabria, L N Machado, G De Rosa, G Collazuol, F Iacob, M Lamoureux, N Ospina, L Ludovici, Y Nishimura, S Cao, M Friend, T Hasegawa, T Ishida, T Kobayashi, M Jakkapu, T Matsubara, T Nakadaira, K Nakamura, Y Oyama, K Sakashita, T Sekiguchi, T Tsukamoto, T Boschi, F Di Lodovico, S Molina Sedgwick, M Taani, S Zsoldos, M Hasegawa, Y Isobe, H Miyabe, Y Nakano, T Shiozawa, T Sugimoto, A T Suzuki, Y Takeuchi, S Yamamoto, A Ali, Y Ashida, J Feng, S Hirota, M Jiang, A K Ichikawa, T Kikawa, M Mori, K E Nakamura, T Nakaya, R A Wendell, K Yasutome, P Fernandez, N McCauley, P Mehta, A Pritchard, K M Tsui, Y Fukuda, Y Itow, H Menjo, T Niwa, K Sato, M Tsukada, P Mijakowski, K Frankiewicz, C K Jung, C Vilela, M J Wilking, C Yanagisawa, D Fukuda, M Harada, K Hagiwara, T Horai, H Ishino, S Ito, Y Koshio, W Ma, N Piplani, S Sakai, M Sakuda, Y Takahira, C Xu, Y Kuno, G Barr, D Barrow, L Cook, A Goldsack, S Samani, C Simpson, D Wark, F Nova, J Y Yang, S J Jenkins, M Malek, J M McElwee, O Stone, M D Thiesse, L F Thompson, H Okazawa, Y Choi, S B Kim, I Yu, K Nishijima, M Koshiba, K Iwamoto, N Ogawa, M Yokoyama, K Martens, M R Vagins, S Izumiyama, M Kuze, M Tanaka, T Yoshida, M Inomoto, M Ishitsuka, R Matsumoto, K Ohta, M Shinoki, J F Martin, C M Nantais, H A Tanaka, T Towstego, R Akutsu, M Hartz, A Konaka, P de Perio, N W Prouse, S Chen, B D Xu, M Posiadala-Zezula, B Richards, B Jamieson, J Walker, A Minamino, K Okamoto, G Pintaudi, R Sasaki

Progress of Theoretical and Experimental Physics 2021 ( 10 ) 1 - 19 2021年10月

Simulations of systematic effects arising from cosmic rays in the LiteBIRD space telescope, and effects on the measurements of CMB B-modes 査読

S.L. Stever, T. Ghigna, M. Tominaga, G. Puglisi, M. Tsujimoto, M. Zeccoli Marazzini, M. Baratto, M. Tomasi, Y. Minami, S. Sugiyama, A. Kato, T. Matsumura, H. Ishino, G. Patanchon, M. Hazumi

Journal of Cosmology and Astroparticle Physics 09 ( 013 ) 1 - 22 2021年9月

Design of a frequency-independent optic axis Pancharatnam-based achromatic half-wave plate 査読

Kunimoto Komatsu, Hirokazu Ishino, Nobuhiko Katayama, Tomotake Matsumura, Yuki Sakurai

Journal of Astronomical Telescopes, Instruments, and Systems 7 ( 03 ) 1 - 13 2021年8月

LiteBIRD satellite: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization 査読

Masashi Hazumi, Peter A. Ade, Alexandre Adler, Erwan Allys, Kam Arnold, Didier Auguste, Jonathan Aumont, Ragnhild Aurlien, Jason Austermann, Carlo Baccigalupi, Anthony J. Banday, R. Banjeri, Rita B. Barreiro, Soumen Basak, Jim Beall, Dominic Beck, Shawn Beckman, Juan Bermejo, Paolo de Bernardis, Marco Bersanelli, Julien Bonis, Julian Borrill, Francois Boulanger, Sophie Bounissou, Maksym Brilenkov, Michael Brown, Martin Bucher, Erminia Calabrese, Paolo Campeti, Alessandro Carones, Francisco J. Casas, Anthony Challinor, Victor Chan, Kolen Cheung, Yuji Chinone, Jean F. Cliche, Loris Colombo, Fabio Columbro, Javier Cubas, Ari Cukierman, David Curtis, Giuseppe D'Alessandro, Nadia Dachlythra, Marco De Petris, Clive Dickinson, Patricia Diego-Palazuelos, Matt Dobbs, Tadayasu Dotani, Lionel Duband, Shannon Duff, Jean M. Duval, Ken Ebisawa, Tucker Elleflot, Hans K. Eriksen, Josquin Errard, Thomas Essinger-Hileman, Fabio Finelli, Raphael Flauger, Cristian Franceschet, Unni Fuskeland, Mathew Galloway, Ken Ganga, Jian R. Gao, Ricardo Genova-Santos, Martina Gerbino, Massimo Gervasi, Tommaso Ghigna, Eirik Gjerløw, Marcin L. Gradziel, Julien Grain, Frank Grupp, Alessandro Gruppuso, Jon E. Gudmundsson, Tijmen de Haan, Nils W. Halverson, Peter Hargrave, Takashi Hasebe, Masaya Hasegawa, Makoto Hattori, Sophie Henrot-Versillé, Daniel Herman, Diego Herranz, Charles A. Hill, Gene Hilton, Yukimasa Hirota, Eric Hivon, Renee A. Hlozek, Yurika Hoshino, Elena de la Hoz, Johannes Hubmayr, Kiyotomo Ichiki, Teruhito Iida, Hiroaki Imada, Kosei Ishimura, Hirokazu Ishino, Greg Jaehnig, Tooru Kaga, Shingo Kashima, Nobuhiko Katayama, Akihiro Kato, Takeo Kawasaki, Reijo Keskitalo, Theodore Kisner, Yohei Kobayashi, Nozomu Kogiso, Alan Kogut, Kazunori Kohri, Eiichiro Komatsu, Kunimoto Komatsu, Kuniaki Konishi, Nicoletta Krachmalnicoff, Ingo Kreykenbohm, Chao-Lin L. Kuo, Akihiro Kushino, Luca Lamagna, Jeff V. Lanen, Massimiliano Lattanzi, Adrian T. Lee, Clément Leloup, François Levrier, Eric Linder, Thibaut Louis, Gemma Luzzi, Thierry Maciaszek, Bruno Maffei, Davide Maino, Muneyoshi Maki, Stefano Mandelli, Enrique Martinez-Gonzalez, Silvia Masi, Tomotake Matsumura, Aniello Mennella, Marina Migliaccio, Yuto Minami, Kazuhisa Mitsuda, Joshua Montgomery, Ludovic Montier, Gianluca Morgante, Baptiste Mot, Yasuhiro Murata, John A. Murphy, Makoto Nagai, Yuya Nagano, Taketo Nagasaki, Ryo Nagata, Shogo Nakamura, Toshiya Namikawa, Paolo Natoli, Simran Nerval, Toshiyuki Nishibori, Haruki Nishino, Fabio Noviello, Créidhe O'Sullivan, Hideo Ogawa, Hiroyuki Ogawa, Shugo Oguri, Hiroyuki Ohsaki, Izumi S. Ohta, Norio Okada, Nozomi Okada, Luca Pagano, Alessandro Paiella, Daniela Paoletti, Guillaume Patanchon, Julien Peloton, Francesco Piacentini, Giampaolo Pisano, Gianluca Polenta, Davide Poletti, Thomas Prouvé, Giuseppe Puglisi, Damien Rambaud, Christopher Raum, Sabrina Realini, Martin Reinecke, Mathieu Remazeilles, Alessia Ritacco, Gilles Roudil, Jose A. Rubino-Martin, Megan Russell, Haruyuki Sakurai, Yuki Sakurai, Maura Sandri, Manami Sasaki, Giorgio Savini, Douglas Scott, Joseph Seibert, Yutaro Sekimoto, Blake Sherwin, Keisuke Shinozaki, Maresuke Shiraishi, Peter Shirron, Giovanni Signorelli, Graeme Smecher, Samantha Stever, Radek Stompor, Hajime Sugai, Shinya Sugiyama, Aritoki Suzuki, Junichi Suzuki, Trygve L. Svalheim, Eric Switzer, Ryota Takaku, Hayato Takakura, Satoru Takakura, Yusuke Takase, Youichi Takeda, Andrea Tartari, Ellen Taylor, Yutaka Terao, Harald Thommesen, Keith L. Thompson, Ben Thorne, Takayuki Toda, Maurizio Tomasi, Mayu Tominaga, Neil Trappe, Matthieu Tristram, Masatoshi Tsuji, Masahiro Tsujimoto, Carole Tucker, Joe Ullom, Gerard Vermeulen, Patricio Vielva, Fabrizio Villa, Michael Vissers, Nicola Vittorio, Ingunn Wehus, Jochen Weller, Benjamin Westbrook, Joern Wilms, Berend Winter, Edward J. Wollack, Noriko Y. Yamasaki, Tetsuya Yoshida, Junji Yumoto, Mario Zannoni, Andrea Zonca

Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave 11443 ( 114432F ) 1 - 20 2020年12月

Concept design of low frequency telescope for CMB B-mode polarization satellite LiteBIRD 査読

Yutaro Sekimoto, Peter Ade, Alexandre Adler, Erwan Allys, Kam Arnold, Didier Auguste, Jonathan Aumont, Ragnhild Aurlien, Jason Austermann, Carlo Baccigalupi, Anthony Banday, Ranajoy Banerji, Rita Barreiro, Soumen Basak, Jim Beall, Dominic Beck, Shawn Beckman, Juan Bermejo, Paolo de Bernardis, Marco Bersanelli, Julien Bonis, Julian Borrill, Francois Boulanger, Sophie Bounissou, Maksym Brilenkov, Michael Brown, Martin Bucher, Erminia Calabrese, Paolo Campeti, Alessandro Carones, Francisco Casas, Anthony Challinor, Victor Chan, Kolen Cheung, Yuji Chinone, Jean Cliche, Loris Colombo, Fabio Columbro, Javier Cubas, Ari Cukierman, David Curtis, Giuseppe D'Alessandro, Nadia Dachlythra, Marco De Petris, Clive Dickinson, Patricia Diego-Palazuelos, Matt Dobbs, Tadayasu Dotani, Lionel Duband, Shannon Duff, Jean Duval, Ken Ebisawa, Tucker Elleflot, Hans Eriksen, Josquin Errard, Thomas Essinger-Hileman, Fabio Finelli, Raphael Flauger, Cristian Franceschet, Unni Fuskeland, Mathew Galloway, Ken Ganga, Jian Gao, Ricardo Genova-Santos, Martina Gerbino, Massimo Gervasi, Tommaso Ghigna, Eirik Gjerløw, Marcin Gradziel, Julien Grain, Frank Grupp, Alessandro Gruppuso, Jon Gudmundsson, Tijmen de Haan, Nils Halverson, Peter Hargrave, Takashi Hasebe, Masaya Hasegawa, Makoto Hattori, Masashi Hazumi, Sophie Henrot-Versillé, Daniel Herman, Diego Herranz, Charles Hill, Gene Hilton, Yukimasa Hirota, Eric hivon, Renee Hlozek, Yurika Hoshino, Elena de la Hoz, Johannes Hubmayr, Kiyotomo Ichiki, Teruhito iida, Hiroaki Imada, Kosei Ishimura, Hirokazu Ishino, Greg Jaehnig, Tooru Kaga, Shingo Kashima, Nobuhiko Katayama, Akihiro Kato, Takeo Kawasaki, Reijo Keskitalo, Theodore Kisner, Yohei Kobayashi, Nozomu Kogiso, Alan Kogut, Kazunori Kohri, Eiichiro Komatsu, Kunimoto Komatsu, Kuniaki Konishi, Nicoletta Krachmalnicoff, Ingo Kreykenbohm, Chao-Lin Kuo, Akihiro Kushino, Luca Lamagna, Jeff Lanen, Massimiliano Lattanzi, Adrien Lee, Clément Leloup, François Levrier, Eric Linder, Thibaut Louis, Gemma Luzzi, Thierry Maciaszek, Bruno Maffei, Davide Maino, Muneyoshi Maki, Stefano Mandelli, Enrique Martinez-Gonzalez, Silvia Masi, Tomotake Matsumura, Aniello Mennella, Marina Migliaccio, Yuto Minanmi, Kazuhisa Mitsuda, Josua Montgomery, Ludovic Montier, Gianluca Morgante, Baptise Mot, Yasuhiro Murata, John Murphy, Makoto Nagai, Yuya Nagano, Takeo Nagasaki, Ryo Nagata, Shogo Nakamura, Toshiya Namikawa, Paolo Natoli, Simran Nerval, Toshiyuki Nishibori, Haruki Nishino, Créidhe O'Sullivan, Hideo Ogawa, Hiroyuki Ogawa, Shogo Oguri, Hiroyuki Osaki, Izumi Ohta, Norio Okada, Nozomi Okada, Luca Pagano, Alessandro Paiella, Daniela Paoletti, Guillaume Patanchon, Julien Peloton, Francesco Piacentini, Giampaolo Pisano, Gianluca Polenta, Davide Poletti, Thomas Prouvé, Giuseppe Puglisi, Damien Tambaud, Christopher Raum, Sabrina Realini, Martin Reinecke, Mathieu Remazeilles, Alessa Ritacco, Gilles Roudil, Jose Rubino-Martin, Megan Russell, Haruyuki Sakurai, Yuki Sakurai, Maura Sandri, Manami Sasaki, Giorgio Savini, Douglas Scott, Joseph Seibert, Blake Sherwin, Keisuke Shinozaki, Maresuke Shiraishi, Peter Shirron, Giovanni Signorelli, Graeme Smecher, Samantha Stever, Radek Stompor, Hajime Sugai, Shinya Sugiyama, aritoki Suzuki, Junichi Suzuki, Trygve Svalheim, Eric Switzer, Ryota Takaku, hayato Takakura, satoru Takakura, Yusuke Takase, Youichi Takeda, Andrea Tartari, Ellen Taylor, Yutaka Terao, Harald Thommesen, Keith L. Thompson, Ben Thorne, Takayuki Toda, Maurizio Tomasi, Mayu Tominaga, Neil Trappe, Matthieu Tristram, Masatoshi Tsuji, Masahiro Tsujimoto, Carole Tucker, Joe Ullom, Gerard Vermeulen, Patricio Vielva, Fabrizio Villa, Michael Vissers, Nicola Vittorio, Ingunn Wehus, Jochen Weller, Benjamin Westbrook, Joern Wilms, Berend Winter, Edward Wollack, Noriko Y. Yamasaki, Tetsuya Yoshida, Junji Yumoto, Mario Zannoni, Andrea Zonca

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X 11453 ( 1145310 ) 1 - 21 2020年12月

Demonstration of anti-reflective structures over a large area for CMB polarization experiments 査読

Ryota Takaku, Shaul Hanany, Yurika Hoshino, Hiroaki Imada, Hirokazu Ishino, Nobuhiko Katayama, Kunimoto Komatsu, Kuniaki Konishi, Makoto Kuwata Gonokami, Tomotake Matsumura, Kazuhisa Mitsuda, Haruyuki Sakurai, Yuki Sakurai, Qi Wen, Noriko Yamasaki, Karl Young, Junji Yumoto

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X 11453 ( 114531A ) 1 - 12 2020年12月

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