Preprint article · Journal article
Dark matter line emission constraints from NuSTAR observations of the Bullet Cluster
University of Oslo1
NASA Goddard Space Flight Center2
SLAC National Accelerator Laboratory3
National Institute for Astrophysics4
California Institute of Technology5
University of California at Berkeley6
Columbia University7
National Space Institute, Technical University of Denmark8
Astrophysics, National Space Institute, Technical University of Denmark9
Some dark matter candidates, e.g., sterile neutrinos, provide observable signatures in the form of mono-energetic line emission. We present the first search for dark matter line emission in the range in a pointed observation of the Bullet Cluster with NuSTAR. We do not detect any significant line emission and instead we derive upper limits (95% CL) on the flux, and interpret these constraints in the context of sterile neutrinos and more generic dark matter candidates.
NuSTAR does not have the sensitivity to constrain the recently claimed line detection at , but improves on the constraints for energies of 10–25 keV.
| Language: | English |
|---|---|
| Publisher: | American Astronomical Society |
| Year: | 2015 |
| Pages: | 48 |
| ISSN: | 15384357 and 0004637x |
| Types: | Preprint article and Journal article |
| DOI: | 10.1088/0004-637X/810/1/48 |
| ORCIDs: | 0000-0002-5308-7651 , 0000-0001-8952-676X , Christensen, Finn Erland , 0000-0003-2686-9241 and Hornstrup, Allan |
