BISOU: a balloon project to measure the CMB spectral distortions

Authors :: Maffei, B.
Abitbol, M. H.
Aghanim, N.
Aumont, J.
Battistelli, E.
Chluba, J.
Coulon, X.
De Bernardis, P.
Douspis, M.
Grain, J.
Gervasoni, S.
Hill, J. C.
Kogut, A.
Masi, S.
Matsumura, T.
Sullivan, C. O
Pagano, L.
Pisano, G.
Remazeilles, M.
Ritacco, A.
Rotti, A.
Sauvage, V.
Savini, G.
Stever, S. L.
Tartari, A.
Thiele, L.
Trappe, N.
Publication Year :: 2021
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.<br />Comment: 12 pages. To be published on the proceedings of the 16th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories (MG16) - 5-9 July 2021. Online Conference, Italy. http://www.icra.it/mg/mg16/