Cosmic Ray Positrons from Cosmic Strings

Details Cosmic Ray Positrons from Cosmic Strings Cosmic Ray Positrons from Cosmic Strings

2009-01-22

arxiv.org/abs/0901.3474v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 4 figures, 2 references added

Scientific paper

We study the spectrum of cosmic ray positrons produced by a scaling distribution of non-superconducting cosmic strings. In this scenario, the positrons are produced from the jets which form from the cosmic string cusp annihilation process. The spectral shape is a robust feature of our scenario, and is in good agreement with the results from the recent PAMELA and ATIC experiments. In particular, the model predicts a sharp upper cutoff in the spectrum, and a flux which rises as the upper cutoff is approached. The energy at which the flux peaks is determined by the initial jet energy. The amplitude of the flux can be adjusted by changing the cosmic string tension and also depends on the cusp annihilation efficiency.

Affiliated with

Also associated with

No associations

Rating

Cosmic Ray Positrons from Cosmic Strings 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 Cosmic Ray Positrons from Cosmic Strings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmic Ray Positrons from Cosmic Strings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-189622