Dark matter caustics and the enhancement of self-annihilation flux

Details Dark matter caustics and the enhancement of self-annihilation flux Dark matter caustics and the enhancement of self-annihilation flux

2007-04-16

arxiv.org/abs/0704.1999v1

JCAP 0705:015,2007

Astronomy and Astrophysics

Astrophysics

To appear in JCAP, 4 pages, 3 figures

Scientific paper

10.1088/1475-7516/2007/05/015

Cold dark matter haloes are populated by caustics, which are yet to be resolved in N-body simulations or observed in the Universe. Secondary infall model provides a paradigm for the study of caustics in "typical" haloes assuming that they have had no major mergers and have grown only by smooth accretion. This is a particular characteristic of the smallest dark matter haloes of about 10^{-5} Mo, which although "atypical" contain no substructures and could have survived until now with no major mergers. Thus using this model as the first guidline, we evaluate the neutralino self-annihilation flux for these haloes. Our results show that caustics could leave a distinct sawteeth signature on the differential and cumulative fluxes coming from the outer regions of these haloes. The total annihilation signal from the regions away from the centre can be boosted by about forty percents.

Affiliated with

Also associated with

No associations

Rating

Dark matter caustics and the enhancement of self-annihilation flux 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 Dark matter caustics and the enhancement of self-annihilation flux, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dark matter caustics and the enhancement of self-annihilation flux will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-44517