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

MAGIC Collaboration; Ahnen M. L.; Ansoldi S.; Antonelli L. A.; Antoranz P.; Babic A.; Banerjee B.; Bangale P.; Barres De Almeida U.; Barrio J. A.; Becerra Gonzalez J.; Bednarek W.; Bernardini E.; Biasuzzi B.; Biland A.; Blanch O.; Bonnefoy S.; Bonnoli G.; Borracci F.; Bretz T.; Carmona E.; Carosi A.; Chatterjee A.; Clavero R.; Colin P.; Colombo E.; Contreras J. L.; Cortina J.; Covino S.; Da Vela P.; Dazzi F.; De Angelis A.; De Lotto B.; De Ona Wilhelmi E.; Delgado Mendez C.; Di Pierro F.; Dominis Prester D.; Dorner D.; Doro M.; Einecke S.; Eisenacher Glawion D.; Elsaesser D.; Fernandez-Barral A.; Fidalgo D.; Fonseca M. V.; Font L.; Frantzen K.; Fruck C.; Galindo D.; Garcia Lopez R. J.; Garczarczyk M.; Garrido Terrats D.; Gaug M.; Giammaria P.; Godinovic N.; Gonzalez Munoz A.; Guberman D.; Hahn A.; Hanabata Y.; Hayashida M.; Herrera J.; Hose J.; Hrupec D.; Hughes G.; Idec W.; Kodani K.; Konno Y.; Kubo H.; Kushida J.; La Barbera A.; Lelas D.; Lindfors E.; Lombardi S.; Longo F.; Lopez M.; Lopez-Coto R.; Lopez-Oramas A.; Lorenz E.; Majumdar P.; Makariev M.; Mallot K.; Maneva G.; Manganaro M.; Mannheim K.; Maraschi L.; Marcote B.; Mariotti M.; Martinez M.; Mazin D.; Menzel U.; Miranda J. M.; Mirzoyan R.; Moralejo A.; Moretti E.; Nakajima D.; Neustroev V.; Niedzwiecki A.; Nievas Rosillo M.; Nilsson K.; Nishijima K.; Noda K.; Orito R.; Overkemping A.; Paiano S.; Palacio J.; Palatiello M.; Paneque D.; Paoletti R.; Paredes J. M.; Paredes-Fortuny X.; Persic M.; Poutanen J.; Prada Moroni P. G.; Prandini E.; Puljak I.; Rhode W.; Ribo M.; Rico J.; Rodriguez Garcia J.; Saito T.; Satalecka K.; Schultz C.; Schweizer T.; Shore S. N.; Sillanpaa A.; Sitarek J.; Snidaric I.; Sobczynska D.; Stamerra A.; Steinbring T.; Strzys M.; Takalo L.; Takami H.; Tavecchio F.; Temnikov P.; Terzic T.; Tescaro D.; Teshima M.; Thaele J.; Torres D. F.; Toyama T.; Treves A.; Verguilov V.; Vovk I.; Ward J. E.; Will M.; Wu M. H.; Zanin R.; Aleksic J.; Wood M.; Anderson B.; Bloom E. D.; Cohen-Tanugi J.; Drlica-Wagner A.; Mazziotta M. N.; Sanchez-Conde M.; Strigari L.

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

MAGIC Collaboration

•

Ahnen M. L.

•

Ansoldi S.

altro

Strigari L.

2016

journal article

Periodico

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS

Abstract

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.