Particle acceleration in high-energy gamma-ray sources

Details Particle acceleration in high-energy gamma-ray sources Particle acceleration in high-energy gamma-ray sources

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apjs...90..877e&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 90, no. 2, p. 877-881

Astronomy and Astrophysics

Astrophysics

19

Astronomical Models, Cosmology, Electron Acceleration, Gamma Ray Bursts, High Energy Interactions, Active Galactic Nuclei, Compton Effect, Energy Spectra, Quasars, Shock Wave Propagation, Wolf-Rayet Stars

Scientific paper

Many proficient gamma-ray sources show energy spectra that are consistent with E-2 primary spectra. Such sources include recently identified gamma-ray quasars and some gamma-ray bursts. Assuming thick target conversion, this is consistent with shock acceleration, and the dominance of the gamma rays of the luminosity is also consistent with previous predictions of high production efficiency of fresh cosmic rays in shocks. The spectral cutoffs in the gamma rays may offer clues as to whether the high-energy particles are electrons or protons. Resolution of this matter might have implications for the nature of the sources and for theory of shock accelerated electrons.

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