FOSSIL：一项用于CMB谱畸变测量的未来任务

FOSSIL: A future mission for CMB spectral distortion measurements

N. Aghanim, B. Maffei, J. Aumont, A. Beelen, B. Borgo, E. Bozzo, J. Chluba, X. Coulon, S. Couturier, F. Cuttaia, B. Cyr, P. De Bernardis, C. De Jabrun, J. -J. Diaz-Garcia, D. Eckert, G. Fabbian, L. Ferrari, F. Finelli, T. Gascard, J. E. Gudmundsson, A. Kogut, G. Lagache, M. Loquet Le Gall, S. Martin, A. I. Silva Martins, A. Monfardini, C. O'Sullivan, L. Pagano, D. Paoletti, G. Pisano, M. Remazeilles, V. Reveret, J. A. Rubino-Martin, V. Sauvage, G. Savini, L. Spencer, A. Tartari, L. Terenzi, N. Trappe, D. Watts, B. Winter, E. Baker, E. S. Battistelli, R. Battye, J. L. Bernal, A. Besnard, F. R. Bouchet, M. Braglia, C. Burigana, M. Calvo, S. Caminade, M. Citran, D. Clements, W. Coulton, E. Courau, G. De Zotti, E. Di Valentino, H. Dole, G. Domenech, S. Evangelista, S. Farrens, M. Frailis, K. A. Glasscock, V. Hervier, E. Kovetz, H. Liu, T. Louis, F. Madec, A. S. Maniyar, C. J. A. P. Martins, S. Masi, L. Maurin, F. Moll, L. Morelli, S. K. Naess, A. Nicola, F. Pace, N. Ponthieu, V. Poulin, E. Prele, N. Sanchez, W. Qin, L. Rodriguez, D. Scott, F. Simon, J. Singal, T. Slatyer, E. M. Teixeira, L. Thiele, M. Tristram, T. Trombetti, L. Vacher, S. Vinzl, A. Zacchei, E. Allys, K. Aryan, J. M. Casas Gonzales, O. Lahav, C. Sidiropoulos

arXiv 2609.17618首次发表：2026-09-17更新：2026-09-17

AI 中文总结

FOSSIL是一项拟议的空间任务，通过宽频绝对光谱测量CMB谱畸变，灵敏度较COBE/FIRAS提升三个数量级，以约束原初涨落、检验暴胀、探测暗物质并研究星系反馈。

AI 中文摘要

我们提出FOSSIL，一项拟议的空间任务，旨在宽频率范围（50GHz至2THz）内对天空强度进行前所未有的绝对光谱测量，以精确测量化学势mu型、康普顿y型和相对论性康普顿y型CMB谱畸变。FOSSIL将达到单极灵敏度，比COBE/FIRAS提升约三个数量级。这些能力将使我们能够约束尺度k~(10至10^4)Mpc^-1上的原初密度涨落，检验暴胀模型，探测暗物质湮灭/衰变/相互作用，约束原初黑洞种子情景，并通过测量宇宙热能含量来确定星系演化和结构形成中的反馈模型。此外，其130个光谱通道将支持遗留天体物理学，包括对宇宙红外背景的精确表征、宇宙正午期间的谱线强度映射以及详细的银河系尘埃绘图。

英文摘要

We present FOSSIL, a proposed space mission which is designed to deliver unprecedented absolute spectroscopic measurements of the sky intensity over a broad frequency range (50GHz to 2THz) to accurately measure chemical-potential mu-type, Compton y-type, and Compton relativistic y-type CMB spectral distortions. FOSSIL will reach monopole sensitivities representing a gain of roughly three orders of magnitude over COBE/FIRAS. These capabilities will allow us to constrain primordial density fluctuations on scales k~(10 to 10^4)Mpc^-1, test inflationary models, probe dark matter annihilation/decay/interactions, constrain primordial black hole seed scenarios, and pin down feedback models in galaxy evolution and structure formation by measuring the cosmic thermal energy content. Furthermore, its 130 spectral channels will enable legacy astrophysics, including precise characterisation of the Cosmic Infrared Background, line intensity mapping during cosmic noon, and detailed Galactic dust mapping.

Comments36 pages, 11 figures

论文原文

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