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Title: Dark matter line emission constraints from NuSTAR observations of the bullet cluster

Journal Article · · The Astrophysical Journal (Online)
 [1];  [2];  [3];  [4];  [4];  [5];  [6];  [7];  [8];  [9];  [5];  [2];  [9]
  1. Univ. of Oslo, Oslo (Norway)
  2. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. INAF, IASF Milano, Milano (Italy)
  5. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  6. Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  7. Columbia Univ., New York, NY (United States)
  8. Univ. of California, Berkeley, CA (United States)
  9. 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
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (6)

Strongly self-interacting vector dark matter via freeze-in journal January 2018
Production regimes for Self-Interacting Dark Matter journal March 2016
Almost closing the ν MSM sterile neutrino dark matter window with NuSTAR journal June 2017
Observation of the new emission line at ~3.5 keV in X-ray spectra of galaxies and galaxy clusters 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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