Journal Article

Interstellar scintillation of compact extragalactic radio sources

Mark A. Walker

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 294, issue 2, pages 307-311
Published in print February 1998 | ISSN: 0035-8711
Published online February 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-8711.1998.01238.x
Interstellar scintillation of compact extragalactic radio sources

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Abstract

The recent discovery of radio variability of a quasar on short time-scales (hours) prompts us to examine what is expected in respect of the interstellar scintillation of very compact, extragalactic radio sources. We find that large-amplitude, rapid, variability is predicted at commonly observed radio frequencies (1–20 GHz) over the vast majority of the extragalactic sky. As a guide to assist observers in understanding their data, we demonstrate simple techniques for predicting the effects of interstellar scintillation on any extragalactic source.

Keywords: ISM: structure; quasars: general; radio continuum: galaxies

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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