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Constraining Dark Matter Models from a Combined Analysis of MilkyWay Satellites with the Fermi Large Area Telescope

Markus Ackermann 1 Marco Ajello 1 A. Albert 2 W. B. Atwood 3 Luca Baldini 4 Jean Ballet 5 Guido Barbiellini 6 D. Bastieri 7 K. Bechtol 1 R. Bellazzini 4 B. Berenji 1 R. D. Blandford 1 E. D. Bloom 1 E. Bonamente 8 A.W. Borgland 1 J. Bregeon 4 M. Brigida 9, 10 Pascal Bruel 11 R. Buehler 1 T. H. Burnett 12 S. Buson 7 G. A. Caliandro 13 R. A. Cameron 1 B. Can˜adas 14 P. A. Caraveo 15 J. M. Casandjian 5 C. Cecchi 8 E. Charles 1 A. Chekhtman 16 J. Chiang 1 S. Ciprini 17 R. Claus 1 J. Cohen-Tanugi 18 J. Conrad 19 S. Cutini 20 A. de Angelis 6 F. de Palma 10 C. D. Dermer 21 S.W. Digel 1 E. Do Couto E Silva 1 P. S. Drell 1 A. Drlica-Wagner 1 L. Falletti 18 C. Favuzzi 10 S. J. Fegan 11 E. C. Ferrara 22 Y. Fukazawa 23 S. Funk 1 P. Fusco 10 F. Gargano 10 D. Gasparrini 20 N. Gehrels 22 S. Germani 8 N. Giglietto 10 F. Giordano 10 M. Giroletti 24 T. Glanzman 1 G. Godfrey 1 I. A. Grenier 5 S. Guiriec 25 M. Gustafsson 7 D. Hadasch 13 M. Hayashida 1, 26 E. Hays 22 R. E. Hughes 2 T. E. Jeltema 3 G. Jo'Hannesson 27 R. P. Johnson 3 A. S. Johnson 1 T. Kamae 1 H. Katagiri 28 J. Kataoka 29 Jürgen Knödlseder 30 M. Kuss 4 J. Lande 1 L. Latronico 4 A. M. Lionetto 31 M. Llena Garde 32 F. Longo 6 F. Loparco 10 B. Lott 33 M. N. Lovellette 21 P. Lubrano 8 G. M. Madejski 1 M. N. Mazziotta 10 J. E. Mcenery 22, 34 J. Mehault 18 P. F. Michelson 1 W. Mitthumsiri 1 T. Mizuno 23 C. Monte 10 M. E. Monzani 1 A. Morselli 35 I.V. Moskalenko 1 S. Murgia 1 M. Naumann-Godo 5 J. P. Norris 36 E. Nuss 18 T. Ohsugi 37 A. Okumura 38, 1 N. Omodei 1 E. Orlando 1 J. F. Ormes 39 M. Ozaki 38 D. Paneque 1, 40 D. Parent 41 M. Pesce-Rollins 4 M. Pierbattista 5 F. Piron 18 G. Pivato 42 T.A. Porter 1 S. Profumo 3 S. Raino' 9, 10 M. Razzano 4, 3 A. Reimer 1, 43 O. Reimer 1, 43 S. Ritz 3 M. Roth 12 H. F.-W. Sadrozinski 3 C. Sbarra 7 J. D. Scargle 44 T. L. Schalk 2 C. Sgro' 4 E. J. Siskind 44 G. Spandre 4 P. Spinelli 10 L. Strigari 1 D. J. Suson 45 H. Tajima 1 H. Takahashi 37 T. Tanaka 1 J. G. Thayer 1 J. B. Thayer 1 D. J. Thompson 21 L. Tibaldo 7 M. Tinivella 4 D. F. Torres 13, 46 E. Troja 22 Y. Uchiyama 1 J. Vandenbroucke 1 V. Vasileiou 18 G. Vianello 1 V. Vitale 35 A. P. Waite 1 P. Wang 1 B. L. Winer 2 K. S. Wood 21 M. Wood 1 Z. Yang 32 S. Zimmer 32
30 GAHEC - Galaxies, Astrophysique des Hautes Energies et Cosmologie
IRAP - Institut de recherche en astrophysique et planétologie
33 GLAST
CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
Abstract : Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope. No dark matter signal is detected. Including the uncertainty in the dark matter distribution, robust upper limits are placed on dark matter annihilation cross sections. The 95% confidence level upper limits range from about 10 26 cm3 s 1 at 5 GeV to about 5 10 23 cm3 s 1 at 1 TeV, depending on the dark matter annihilation final state. For the first time, using gamma rays, we are able to rule out models with the most generic cross section ( 3 10 26 cm3 s 1 for a purely s-wave cross section), without assuming additional boost factors.
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Markus Ackermann, Marco Ajello, A. Albert, W. B. Atwood, Luca Baldini, et al.. Constraining Dark Matter Models from a Combined Analysis of MilkyWay Satellites with the Fermi Large Area Telescope. Physical Review Letters, American Physical Society, 2011, 107, pp.241302. ⟨10.1103/PhysRevLett.107.241302⟩. ⟨in2p3-00657896⟩

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