LAVALLE, J.; MANSERI, H.; JACHOLKOWSKA, A.; BRION, E.; BRITTO, R.; BRUEL, Pascal; BUSSONS GORDO, J.; DUMORA, D.; DURAND, E.; GIRAUD, E.; LOTT, B.; MÜNZ, F.; NUSS, E.; PIRON, F.; REPOSEUR, T.; SMITH, D. A.

doi:10.1051/0004-6361:20054340

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LAVALLE, J.
Laboratoire de Physique Théorique et Astroparticules [LPTA]

MANSERI, H.
Laboratoire Leprince-Ringuet [LLR]

JACHOLKOWSKA, A.
Laboratoire de Physique Théorique et Astroparticules [LPTA]

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Astronomy and Astrophysics - A&A. 2006-04, vol. 450, p. 1-8

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Context: .If dark matter is made of neutralinos, annihilation of such Majorana particles should produce high energy cosmic rays, especially in galaxy halo high density regions like galaxy centres. Aims: .M 31 (Andromeda) is our nearest neighbour spiral galaxy, and both its high mass and its low distance make it a source of interest for the indirect search for dark matter through γ-ray detection. Methods: .The ground based atmospheric Cherenkov telescope CELESTE observed M 31 from 2001 to 2003, in the mostly unexplored energy range 50-500 GeV. Results: .These observations provide an upper limit on the flux above 50 GeV around 10-10 cm-2 s-1 in the frame of supersymmetric dark matter, and more generally on any gamma emission from M 31.< Leer menos

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dark matter

indirect detection

gamma-ray astronomy

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Indirect search for dark matter in M 31 with the CELESTE experiment

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