Ultra-high energy cosmic rays from Quark Novae

Details Ultra-high energy cosmic rays from Quark Novae Ultra-high energy cosmic rays from Quark Novae

2003-01-29

arxiv.org/abs/astro-ph/0301575v2

Astrophys.J. 626 (2005) 389-395

Astronomy and Astrophysics

Astrophysics

20 pages, 1 figure. Major revisions in the text. Accepted for publication in the Astrophysical Journal

Scientific paper

10.1086/430099

We explore acceleration of ions in the Quark Nova (QN) scenario, where a neutron star experiences an explosive phase transition into a quark star (born in the propeller regime). In this picture, two cosmic ray components are isolated: one related to the randomized pulsar wind and the other to the propelled wind, both boosted by the ultra-relativistic Quark Nova shock. The latter component acquires energies $10^{15} {\rm eV} 10^{18.6}$ eV. The composition is dominated by ions present in the pulsar wind in the energy range above $10^{18.6}$ eV, while at energies below $10^{18}$ eV the propelled ejecta, consisting of the fall-back neutron star crust material from the explosion, is the dominant one. Added to these two components, the propeller injects relativistic particles with Lorentz factors $\Gamma_{\rm prop.} \sim 1-1000$, later to be accelerated by galactic supernova shocks. The QN model appears to be able to account for the extragalactic cosmic rays above the ankle and to contribute a few percent of the galactic cosmic rays below the ankle. We predict few hundred ultra-high energy cosmic ray events above $10^{19}$ eV for the Pierre Auger detector per distant QN, while some thousands are predicted for the proposed EUSO and OWL detectors.

Affiliated with

Also associated with

No associations

Rating

Ultra-high energy cosmic rays from Quark Novae 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 Ultra-high energy cosmic rays from Quark Novae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultra-high energy cosmic rays from Quark Novae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-679324