Criteria for grasar action in astrophysical sources

Details Criteria for grasar action in astrophysical sources Criteria for grasar action in astrophysical sources

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aipc..101..428m&link_type=abstract

IN: Positron-electron pairs in astrophysics; Proceedings of the Workshop, Greenbelt, MD, January 6-8, 1983 (A85-31276 13-90). Ne

Astronomy and Astrophysics

Astrophysics

Astrophysics, Gamma Ray Bursts, Gamma Rays, Positron Annihilation, Compton Effect, Pair Production, Particle Density (Concentration), Photons, Red Shift

Scientific paper

The theory of gamma-ray amplification through stimulated annihilation radiation (grasar) was developed by Ramaty, McKinley and Jones. For gamma-ray bursts similar to the March 5, 1979 burst, an observed annihilation line of width <0.03 MeV would imply a grasar source. The minimum pair density needed for the onset of grasar action is ≡1030 cm-3 and the peak of the grasar line, without a gravitational redshift, is below 0.5 MeV.

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