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arxiv: 1601.06590 · v2 · pith:ZK76LOMKnew · submitted 2016-01-25 · 🌌 astro-ph.HE · astro-ph.CO

Limits to dark matter annihilation cross-section from a combined analysis of MAGIC and Fermi-LAT observations of dwarf satellite galaxies

M. L. Ahnen , S. Ansoldi , L. A. Antonelli , P. Antoranz , A. Babic , B. Banerjee , P. Bangale , U. Barres de Almeida
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J. A. Barrio J. Becerra Gonz\'alez W. Bednarek E. Bernardini B. Biasuzzi A. Biland O. Blanch S. Bonnefoy G. Bonnoli F. Borracci T. Bretz E. Carmona A. Carosi A. Chatterjee R. Clavero P. Colin E. Colombo J. L. Contreras J. Cortina S. Covino P. Da Vela F. Dazzi A. De Angelis B. De Lotto E. de O\~na Wilhelmi C. Delgado Mendez F. Di Pierro D. Dominis Prester D. Dorner M. Doro S. Einecke D. Eisenacher Glawion D. Elsaesser A. Fern\'andez-Barral D. Fidalgo M. V. Fonseca L. Font K. Frantzen C. Fruck D. Galindo R. J. Garc\'ia L\'opez M. Garczarczyk D. Garrido Terrats M. Gaug P. Giammaria N. Godinovi\'c A. Gonz\'alez Mu\~noz D. Guberman A. Hahn Y. Hanabata M. Hayashida J. Herrera J. Hose D. Hrupec G. Hughes W. Idec K. Kodani Y. Konno H. Kubo J. Kushida A. La Barbera D. Lelas E. Lindfors S. Lombardi F. Longo M. L\'opez R. L\'opez-Coto A. L\'opez-Oramas E. Lorenz P. Majumdar M. Makariev K. Mallot G. Maneva M. Manganaro K. Mannheim L. Maraschi B. Marcote M. Mariotti M. Mart\'inez D. Mazin U. Menzel J. M. Miranda R. Mirzoyan A. Moralejo E. Moretti D. Nakajima V. Neustroev A. Niedzwiecki M. Nievas Rosillo K. Nilsson K. Nishijima K. Noda R. Orito A. Overkemping S. Paiano J. Palacio M. Palatiello D. Paneque R. Paoletti J. M. Paredes X. Paredes-Fortuny M. Persic J. Poutanen P. G. Prada Moroni E. Prandini I. Puljak W. Rhode M. Rib\'o J. Rico J. Rodriguez Garcia T. Saito K. Satalecka C. Schultz T. Schweizer S. N. Shore A. Sillanp\"a\"a J. Sitarek I. Snidaric D. Sobczynska A. Stamerra T. Steinbring M. Strzys L. Takalo H. Takami F. Tavecchio P. Temnikov T. Terzi\'c D. Tescaro M. Teshima J. Thaele D. F. Torres T. Toyama A. Treves V. Verguilov I. Vovk J. E. Ward M. Will M. H. Wu R. Zanin (the MAGIC Collaboration) J. Aleksi\'c M. Wood B. Anderson E. D. Bloom J. Cohen-Tanugi A. Drlica-Wagner M. N. Mazziotta M. S\'anchez-Conde L. Strigari
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keywords analysisdarkgamma-raymagicmatterannihilationdwarffermi-lat
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We present the first joint analysis of gamma-ray data from the MAGIC Cherenkov telescopes and the Fermi Large Area Telescope (LAT) to search for gamma-ray signals from dark matter annihilation in dwarf satellite galaxies. We combine 158 hours of Segue 1 observations with MAGIC with 6-year observations of 15 dwarf satellite galaxies by the Fermi-LAT. We obtain limits on the annihilation cross-section for dark matter particle masses between 10 GeV and 100 TeV - the widest mass range ever explored by a single gamma-ray analysis. These limits improve on previously published Fermi-LAT and MAGIC results by up to a factor of two at certain masses. Our new inclusive analysis approach is completely generic and can be used to perform a global, sensitivity-optimized dark matter search by combining data from present and future gamma-ray and neutrino detectors.

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