Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999head....4.0101f&link_type=abstract
American Astronomical Society, HEAD meeting #4, #01.01; Bulletin of the American Astronomical Society, Vol. 31, p.695
Astronomy and Astrophysics
Astronomy
Scientific paper
Historically, both gamma-ray bursts and soft gamma-ray repeaters were identified on the basis of transient flashes of gamma-ray emission. However, in recent years, substantial progress has been made in understanding the nature of these different phenomena as a result of shorter wavelength observations coupled with keen theoretical insight. For gamma-ray bursts I will show how the discovery of long-lived X-ray, optical and radio afterglows has been used to put constraints on their energetics, geometry, and environment. Similarly, for soft gamma-ray repeaters I will use the properties of the surrounding nebular emission to bolster the now-popular magnetar model.
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