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Record 1 of 1670
Physics of gamma-ray bursts
Author and Affiliation:
Lamb, D. Q.(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States)
Abstract: Attention is given to the accumulating evidence for the view that gamma-ray bursts come from strongly magnetic neutron stars, discussing the physical properties of the emission region and the radiation processes expected in strong magnetic fields, and emphasizing that the observed burst spectra require that the emission region be optically thin. This entails that the energy of the emitting plasma and/or the plasma itself be continuously replenished during a burst, and that the cooling time scale of the emitting plasma be much shorter than the observed duration of the bursts. This characteristic of the cooling time scale implies that the burst intensity and spectrum can vary on extremely short time scales, and that the burst duration must have a separate explanation. It is emphasized that synchrotron emission is favored as the gamma-ray production mechanism; it is the only mechanism capable of satisfying the optical thinness constraint while producing the observed luminosity.
Publication Date: Jan 01, 1984
Document ID:
19840061057
(Acquired Nov 28, 1995)
Accession Number: 84A43844
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: New York Academy of Sciences, Annals; p. 237-281; (ISSN 0077-8923); 422
Publisher Information: United States
Contract/Grant/Task Num: NAGW-246
Financial Sponsor: NASA; United States
Organization Source: Harvard-Smithsonian Center for Astrophysics; Cambridge, MA, United States
Description: 45p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ASTRONOMICAL MODELS; GAMMA RAY ASTRONOMY; GAMMA RAY BURSTS; GAMMA RAY SPECTRA; MAGNETIC STARS; NEUTRON STARS; BREMSSTRAHLUNG; COMPTON EFFECT; HIGH TEMPERATURE PLASMAS; OPTICAL THICKNESS; PLASMA COOLING; POSITRON ANNIHILATION; STELLAR MASS ACCRETION; SYNCHROTRON RADIATION
Imprint And Other Notes: (American Institute of Physics, NASA, NSF, U.S. Department of Energy, et al., Texas Symposium on Relativistic Astrophysics, 11th, Austin, TX, Dec. 12-17, 1982) New York Academy of Sciences, Annals (ISSN 0077-8923), vol. 422, 1984, p. 237-281.
Availability Source: Other Sources
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