The ionization of gamma‐ray burst environments
作者:
D. L. Band,
D. H. Hartmann,
期刊:
AIP Conference Proceedings
(AIP Available online 1991)
卷期:
Volume 265,
issue 1
页码: 342-346
ISSN:0094-243X
年代: 1991
DOI:10.1063/1.42841
出版商: AIP
数据来源: AIP
摘要:
If a gamma‐ray burst (GRB) occurs in a neutral medium, ionizing radiation associated with the burst will flash‐photoionize a region surrounding the source. Detection of the line emission from this ionized region can constrain the flux of ionizing radiation accompanying the GRB and the density and ionization state of the environment surrounding the burst source. If the medium is sufficiently dense then the ionized region will recombine and fade on human timescales, aiding in the detection of the burst location and further constraining the density of the medium. However, dust within the dense medium may attenuate the line flux; the burst is unlikely to melt the dust along the line‐of‐sight. Astronomically interesting flux limits can be established by observations with reasonable integration times on a major telescope (e.g., 3 meter or larger).
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