Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun

Details Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun

2011-07-21

arxiv.org/abs/1107.4272v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

18 pages, 8 figures, accepted for publication in Physical Review D - contact authors: Francesco Loparco (loparco@ba.infn.it),

Scientific paper

During its first year of data taking, the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope has collected a large sample of high-energy cosmic-ray electrons and positrons (CREs). We present the results of a directional analysis of the CRE events, in which we searched for a flux excess correlated with the direction of the Sun. Two different and complementary analysis approaches were implemented, and neither yielded evidence of a significant CRE flux excess from the Sun. We derive upper limits on the CRE flux from the Sun's direction, and use these bounds to constrain two classes of dark matter models which predict a solar CRE flux: (1) models in which dark matter annihilates to CREs via a light intermediate state, and (2) inelastic dark matter models in which dark matter annihilates to CREs.

Affiliated with

Also associated with

No associations

Rating

Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun 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 Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constraints on dark matter models from a Fermi LAT search for high-energy cosmic-ray electrons from the Sun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-688021