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Constraining heavy decaying dark matter with the high energy gamma-ray limits

O.K. Kalashev
(
- Moscow, INR
)
,
M. Yu. Kuznetsov
(
- Moscow, INR
)

Jun 23, 2016

6 pages

Published in:

Phys.Rev.D 94 (2016) 6, 063535

Published: Sep 30, 2016

e-Print:

1606.07354 [astro-ph.HE]

DOI:

10.1103/PhysRevD.94.063535

Report number:

INR-TH-2016-019

View in:

ADS Abstract Service

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Abstract: (APS)

We consider decaying dark matter with masses 107≲M≲1016 GeV as a source of ultrahigh energy (UHE) gamma rays. Using recent limits on UHE gamma-ray flux for energies Eγ>2×1014 eV, provided by extensive air shower observatories, we put limits on masses and lifetimes of the dark matter. We also discuss possible dark matter decay origin of tentative 100 PeV photon flux detected with the EAS-MSU experiment.

Note:

Journal version, to appear in PRD, 12 pages, 5 figures

gamma ray: UHE
dark matter: lifetime
dark matter: decay
gamma ray: energy
gamma ray: flux
energy: high
photon: flux
showers: atmosphere
observatory
air

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