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arXiv · 2111.00246

BISOU: a balloon project to measure the CMB spectral distortions

B. Maffei·M. H. Abitbol·N. Aghanim·J. Aumont·E. Battistelli·J. Chluba·X. Coulon·P. De Bernardis·M. Douspis·J. Grain·S. Gervasoni·J. C. Hill·A. Kogut·S. Masi·T. Matsumura·C. O Sullivan·L. Pagano·G. Pisano·M. Remazeilles·A. Ritacco·A. Rotti·V. Sauvage·G. Savini·S. L. Stever·A. Tartari·L. Thiele·N. Trappe
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Abstract

The BISOU (Balloon Interferometer for Spectral Observations of the Universe) project aims to study the viability and prospects of a balloon-borne spectrometer, pathfinder of a future space mission dedicated to the measurements of the CMB spectral distortions. We present here a preliminary concept based on previous space mission proposals, together with some sensitivity calculation results for the observation goals, showing that a 5-sigma measurement of the y-distortions is achievable.

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B. Maffei, M. H. Abitbol, N. Aghanim, J. Aumont, E. Battistelli, J. Chluba, X. Coulon, P. De Bernardis, M. Douspis, J. Grain, S. Gervasoni, J. C. Hill, A. Kogut, S. Masi, T. Matsumura, C. O Sullivan, L. Pagano, G. Pisano, M. Remazeilles, A. Ritacco, A. Rotti, V. Sauvage, G. Savini, S. L. Stever, A. Tartari, L. Thiele, N. Trappe. 2021-10-30. BISOU: a balloon project to measure the CMB spectral distortions. https://arxiv.org/abs/2111.00246

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