PoS - Proceedings of Science
Volume 461 - High Energy Phenomena in Relativistic Outflows VIII (HEPROVIII) - Oral presentations
Photon energy gain in relativistic Plasma with velocity Shear: A new mechanism for producing power-law spectra at high energies
M.K. Vyas* and A. Pe'er
Full text: Not available
We investigate a novel mechanism of photon energy gain in an optically thick relativistic plasma with velocity shear. It is a Fermilike process where the photons repeatedly scatter within the regions of different Lorentz factors, thereby gaining energy on average. The resulting spectra have a power-law shape at high energies. Thus, this mechanism is an alternative to the classical emission from power-law accelerated particles that can generate power-law spectra in sources such as Gamma-ray bursts (GRBs) and Active Galactic Nuclei (AGNs). Using both numerical simulations and theoretical calculations, we compute the expected spectra for parameters characterizing GRBs and recover the range of their observed photon indices at high energies.
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.