Excess in diffusive gamma rays interpreted as a Dark Matter annihilation signal
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DrChristian Sander(University of Hamburg)
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US/Central
Salle 101 (LAL)
Salle 101
LAL
Description
Recently it was shown that the excess of diffuse Galactic gamma
rays above 1 GeV could be interpreted as a Dark Matter annihilation
signal. From the directional dependence a possible halo profile
could be extracted as proven by reconstructing the peculiar shape
of the rotation curve of the Miky Way.
From the spectral shape of the excess it is possible to determine a
range of the allowed WIMP mass. It will be shown, that the DM
interpretation of the excess is compatible with the spectral shape
of the extragalactic flux, which can be extracted from the EGRET
data in a selfconsistent way.
The limits on the Wimp mass can be used to test the supersymmetric
parameter space. It is found that the EGRET excess combined with
all electroweak constraints is fully consistent with the minimal
mSUGRA model for scalars in the TeV range and gauginos below 500 GeV.