Dark matter line emission constraints from NuSTAR observations of the bullet cluster
Journal Article
·
· The Astrophysical Journal (Online)
- Univ. of Oslo, Oslo (Norway)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- INAF, IASF Milano, Milano (Italy)
- California Inst. of Technology (CalTech), Pasadena, CA (United States)
- Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Columbia Univ., New York, NY (United States)
- Univ. of California, Berkeley, CA (United States)
- Technical Univ. of Denmark, Lyngby (Denmark)
Some dark matter candidates, e.g., sterile neutrinos, provide observable signatures in the form of mono-energetic line emission. Here, we present the first search for dark matter line emission in the $$3-80\;\mathrm{keV}$$ 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 $$3.5\;\mathrm{keV}$$, but improves on the constraints for energies of $$10-25\;\mathrm{keV}$$.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1326854
- Report Number(s):
- SLAC-PUB-16711
- Journal Information:
- The Astrophysical Journal (Online), Vol. 810, Issue 1; ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 19 works
Citation information provided by
Web of Science
Web of Science
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journal | March 2016 |
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journal | June 2017 |
Observation of the new emission line at ~3.5 keV in X-ray spectra of galaxies and galaxy clusters
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journal | January 2016 |
Observation of the new emission line at ~3.5 keV in X-ray spectra of galaxies and galaxy clusters | text | January 2015 |
Decaying dark matter search with NuSTAR deep sky observations | text | January 2016 |
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