Criteria for grasar action in astrophysical sources
Abstract
The theory of gamma-ray amplification through stimulated annihilation radiation (grasar) was developed by Ramaty, McKinley and Jones (hereafter RMJ). The 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 onset of graser 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 at <0.5 MeV.
- Publication:
-
Positron-Electron Pairs in Astrophysics
- Pub Date:
- July 1983
- DOI:
- 10.1063/1.34125
- Bibcode:
- 1983AIPC..101..428M
- Keywords:
-
- Astrophysics;
- Gamma Ray Bursts;
- Gamma Rays;
- Positron Annihilation;
- Compton Effect;
- Pair Production;
- Particle Density (Concentration);
- Photons;
- Red Shift;
- Astrophysics;
- 95.30.Gv;
- 98.70.Qy;
- Radiation mechanisms;
- polarization;
- X-ray sources;
- X-ray bursts