Search for Dark Matter With X-ray Observations of Dwarf Spheroidal Galaxies

Details Search for Dark Matter With X-ray Observations of Dwarf Spheroidal Galaxies Search for Dark Matter With X-ray Observations of Dwarf Spheroidal Galaxies

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21430204l&link_type=abstract

American Astronomical Society, AAS Meeting #214, #302.04; Bulletin of the American Astronomical Society, Vol. 41, p.719

Physics

Scientific paper

We have observed the Ursa Minor and Draco dwarf spheroidal galaxies with the Suzaku X-ray Observatory, and the Wilman 1 system with the Chandra X-ray Observatory, to search for X-ray spectral lines emitted by radiatively decaying warm dark matter in the form of sterile neutrinos. We present upper limits based on our spectral analysis, and discuss the astrophysical and particle physics implications. We also place limits on secondary X-rays from WIMP annihilation, based on our measurements of the hard X-ray continuum in these galaxies.

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