activity
19962010
most citedCosmic rays acceleration at ultrarelativistic subshocks

4 citations · 4 across the 2 of their papers we have counts for

collaborators

8 papers

astro-ph.HE2010

Relativistic slowing down shocks as sources of GRB lag

Janusz Bednarz

We are demonstrating in what way slowing down ultrarelativistic shocks are creating GRB lags. The reflection process produces positive lags and Cracow acceleration process negative…

astro-ph2004★ 4 cited

Cosmic rays acceleration at ultrarelativistic subshocks

Janusz Bednarz

We present the model of cosmic rays acceleration at ultrarelativistic subshocks and confront it with the observations of gamma-ray bursts and blazars. We investigate cosmic rays ac…

astro-ph2001

Comment on the first-order Fermi acceleration at ultra-relativistic shocks

M. Ostrowski, J. Bednarz

The first-order Fermi acceleration process at an ultra-relativistic shock wave is expected to create a particle spectrum with the unique asymptotic spectral index sigma_{gamma >> 1…

astro-ph2000

Acceleration time scale in an ultrarelativistic shock

Janusz Bednarz

The acceleration mechanism at ultrarelativistic shocks is investigated using the Monte Carlo simulations. We apply a method of discrete small amplitude particle momentum scattering…

astro-ph2000

Cosmic ray acceleration at relativistic and ultrarelativistic shock waves

Janusz Bednarz

Using the Monte Carlo simulations we apply a method of discrete small amplitude particle momentum scattering to reproduce highly anisotropic conditions at relativistic shocks. We d…

astro-ph1999

Efficiency of cosmic ray reflections from an ultrarelativistic shock wave

J. Bednarz, M. Ostrowski

The process of cosmic ray acceleration up to energies in excess of eV at relativistic shock waves with large Lorentz factors, requires particle energy…