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Interstellar scintillation of the radio source associated with the gamma ray burst of 8 May 1997

Published online by Cambridge University Press:  12 April 2016

T.V. Smirnova  and
V.I. Shishov
T.V. Smirnova
Affiliation:
Radio Astronomy Observatory of Astro Space Center, Lebedev Physical Institute, Pushchino, Moscow region 142292, Russia
V.I. Shishov
Affiliation:
Radio Astronomy Observatory of Astro Space Center, Lebedev Physical Institute, Pushchino, Moscow region 142292, Russia

Abstract

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We show that variability of the radio source associated with the gamma ray burst of May 8, 1997 can be explained by scintillations on interstellar plasma inhomogeneities in the weak regime at 4.86 and 8.46 GHz, and by the refractive component of saturated scintillations at 1.43 GHz. Cosmological distance of this source R ≊ 1028 cm is more preferable. The source has the size about 2 μarcsec at frequency 4.86 GHz and the velocity of spreading is about 25 μarcsec/year.

Type
Part 8. Pulsars and the Interstellar Medium
Information
International Astronomical Union Colloquium , Volume 177: Pulsar Astronomy - 2000 and Beyond , 2000 , pp. 569 - 570
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

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