Particle Energy And Acceleration Efficiencies In Highly Relativistic Shocks

Details Particle Energy And Acceleration Efficiencies In Highly Relativistic Shocks Particle Energy And Acceleration Efficiencies In Highly Relativistic Shocks

2001-01-15

arxiv.org/abs/astro-ph/0101245v2

Astronomy and Astrophysics

Astrophysics

8 pages, 8 postscript figures, results presented in the 17th ECRS Lodz, Poland (2000)

Scientific paper

In this paper we present an investigation of numerical Monte Carlo simulations of the diffusive shock acceleration in the test particle limit. Very high gamma flow astrophysical plasmas, have been used, from $\gamma_{up}$ $\sim50$ up to $\gamma_{up}$ $\sim1000$, which could be relevant to the suggested models of AGNs Jets and their Central Engines as well as the ultra-relativistic shock particle acceleration in Gamma Ray Burst (GRB) fireballs. Particularly the energy gain per shock crossing and the time constant for the above high relativistic processes is numerically calculated. We explicitly find a considerable $\gamma^{2}$ energy boosting in the first shock cycle, and in all subsequent shock cycles the particle energy is multiplied by a large factor. Also a noted acceleration speed-up for the same acceleration process has been observed. Both of those results are connected with theoretical suggestions that a significant enhancement of the acceleration process is possible due to relativistic effects not present at lower plasma flow speeds. The acceleration speed-up and the mean energy-gain per shock cycle found could efficiently justify the theory of the origin of Ultra High Energy Cosmic Rays (UHECR) from the sites of GRBs.

Affiliated with

Also associated with

No associations

Rating

Particle Energy And Acceleration Efficiencies In Highly Relativistic Shocks 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 Particle Energy And Acceleration Efficiencies In Highly Relativistic Shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particle Energy And Acceleration Efficiencies In Highly Relativistic Shocks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-426198