B/C ratio and the PAMELA positron excess

Дата и время публикации : 2012-11-05T21:01:47Z

Авторы публикации и институты :
M. Kachelriess
S. Ostapchenko

Ссылка на журнал-издание: Phys. Rev. D 87, 047301 (2013)
Коментарии к cтатье: 4 pages, 4 eps figures, v2: one reference added
Первичная категория: astro-ph.HE

Все категории : astro-ph.HE

Краткий обзор статьи: We calculate the diffuse intensity of cosmic ray (CR) nuclei and their secondaries in the Boron-Carbon group produced by supernova remnants (SNR). The trajectories of charged particles in the SNR are modeled as a random walk in the test particle approximation. Secondary production by CRs colliding with gas in the SNR is included as a Monte Carlo process, while we use Galprop to account for the propagation and interactions of CRs in the Galaxy. In the vicinity of a source, we find an approximately constant B/C ratio as a function of energy. As a result, the B/C ratio at Earth does not rise with energy, but flattens instead in the high energy limit. This prediction can be soon tested by the AMS-2 collaboration.

Category: Physics