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arxiv: 2111.00246 · v1 · pith:KNERIC6I · submitted 2021-10-30 · astro-ph.IM · astro-ph.CO

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
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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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keywords spectralballoonbisoudistortionsmissionprojectspaceachievable
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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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