Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco

Abstract

The nearby dwarf spheroidal galaxy Draco with its high mass to light ratio is one of the most auspicious targets for indirect dark matter searches. Annihilation of hypothetical DM particles can result in high-energy gamma-rays, e.g. from neutralino annihilation in the supersymmetric framework. With the MAGIC telescope a search for a possible DM signal originating from Draco was performed during 2007. The analysis of the data results in a flux upper limit of 1.1x10^-11 photons cm^-2 sec^-1 for photon energies above 140 GeV, assuming a point like source. Furthermore, a comparison with predictions from supersymmetric models is given. While our results do not constrain the mSUGRA phase parameter space, a very high flux enhancement can be ruled out.

Accepted for publication by Astrophysical Journal

References in corpus (5)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Precise constraints on the dark matter content of Milky Way dwarf galaxies for gamma-ray experiments
• Detecting dark matter WIMPs in the Draco dwarf: a multi-wavelength perspective
• Dark Matter annihilation in Draco: new considerations of the expected gamma flux

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