Chandra X-ray Constraints on Sterile Neutrino Warm Dark Matter

Details Chandra X-ray Constraints on Sterile Neutrino Warm Dark Matter Chandra X-ray Constraints on Sterile Neutrino Warm Dark Matter

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.1601w&link_type=abstract

American Astronomical Society, HEAD meeting #12, #16.01

Astronomy and Astrophysics

Astronomy

Scientific paper

We use the Chandra unresolved X-ray spectrum of a 12'-28’ (2.8-6.4 kpc) annular region of the Andromeda galaxy to constrain the radiative decay of sterile neutrino warm dark matter. By excising the most baryon-dominated, central 2.8 kpc of the galaxy, we reduce the uncertainties in our estimate of the dark matter mass within the field of view and improve the signal-to-noise ratio of the prospective sterile neutrino decay signatures relative to hot gas and unresolved stellar emission. Our findings impose the most stringent limit on the sterile neutrino mass in the context of the Dodelson-Widrow model, ms < 2.2 keV (95% C.L.). Our results also constrain alternative sterile neutrino production scenarios at very small active-sterile neutrino mixing angles.

Affiliated with

Also associated with

No associations

Rating

Chandra X-ray Constraints on Sterile Neutrino Warm Dark Matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Chandra X-ray Constraints on Sterile Neutrino Warm Dark Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chandra X-ray Constraints on Sterile Neutrino Warm Dark Matter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1402769