Deep XMM Observations of Draco rule out a dark matter decay origin for the 3.5 keV line. Jeltema, T. E. & Profumo, S. 2015. cite arxiv:1512.01239Comment: 4 pages, 3 figures, submitted to MNRAS
Deep XMM Observations of Draco rule out a dark matter decay origin for the 3.5 keV line [link]Paper  abstract   bibtex   
We searched for an X-ray line at energies around 3.5 keV in deep, ~1.6 Msec XMM-Newton observations of the dwarf spheroidal galaxy Draco. No line was found. The data in this energy range are completely consistent with a simple power law X-ray background, dominated by particle background, plus instrumental lines; the addition of a ~3.5 keV line feature gives no improvement to the fit. The corresponding upper limit on the line flux rules out a dark matter decay origin for the 3.5 keV line found in observations of clusters of galaxies and in the Galactic Center at greater than 99% C.L..
@misc{jeltema2015observations,
  abstract = {We searched for an X-ray line at energies around 3.5 keV in deep, ~1.6 Msec
XMM-Newton observations of the dwarf spheroidal galaxy Draco. No line was
found. The data in this energy range are completely consistent with a simple
power law X-ray background, dominated by particle background, plus instrumental
lines; the addition of a ~3.5 keV line feature gives no improvement to the fit.
The corresponding upper limit on the line flux rules out a dark matter decay
origin for the 3.5 keV line found in observations of clusters of galaxies and
in the Galactic Center at greater than 99% C.L..},
  added-at = {2015-12-07T10:09:18.000+0100},
  author = {Jeltema, Tesla E. and Profumo, Stefano},
  biburl = {http://www.bibsonomy.org/bibtex/24515c9c7dae10f71c143ae94a958e363/miki},
  description = {[1512.01239] Deep XMM Observations of Draco rule out a dark matter decay origin for the 3.5 keV line},
  interhash = {54b7054cb6be4cc60cc77f8ef1811ae2},
  intrahash = {4515c9c7dae10f71c143ae94a958e363},
  keywords = {line emission decay dwarf dark matter},
  note = {cite arxiv:1512.01239Comment: 4 pages, 3 figures, submitted to MNRAS},
  timestamp = {2015-12-07T10:09:18.000+0100},
  title = {Deep XMM Observations of Draco rule out a dark matter decay origin for
  the 3.5 keV line},
  url = {http://arxiv.org/abs/1512.01239},
  year = 2015
}

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