Search for Dark Matter With X-ray Observations of Dwarf Spheroidal Galaxies
Abstract
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.
- Publication:
-
American Astronomical Society Meeting Abstracts #214
- Pub Date:
- May 2009
- Bibcode:
- 2009AAS...21430204L