Limits to Dark Matter Annihilation Cross-Section from a Combined Analysis of MAGIC and Fermi-LAT Observations of Dwarf Satellite Galaxies

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.

doi:10.1088/1475-7516/2016/02/039

Limits to Dark Matter Annihilation Cross-Section from a Combined Analysis of MAGIC and Fermi-LAT Observations of Dwarf Satellite Galaxies

MAGIC and
Fermi-LAT

Collaborations

•

M.L. Ahnen
(
- Zurich, ETH
)

Jan 25, 2016

19 pages

Published in:

JCAP 02 (2016) 039

Published: Feb 16, 2016

e-Print:

1601.06590 [astro-ph.HE]

DOI:

10.1088/1475-7516/2016/02/039

PDG:

{{\mathit X}^{0}}

Annihilation Cross Section

Report number:

FERMILAB-PUB-16-283-AE

Experiments:

View in:

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Abstract: (IOP)

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.

Note:

19 pages, 3 figures. V2: Few typos corrected and references added. Matches published version JCAP 02 (2016) 039

dark matter experiments
gamma ray experiments
dwarfs galaxies
neutrino experiments
dark matter: annihilation
cross section: annihilation
neutrino: detector
gamma ray: VHE
MAGIC
satellite

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