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Interstellar Broadening of Compact Low Galactic Latitude Radio Sources

Published online by Cambridge University Press:  04 August 2017

Brian Dennison ,
M. Thomas ,
J. J. Broderick ,
R. S. Booth ,
Robert L. Brown  and
J. J. Condon
Brian Dennison
Affiliation:
Physics Dept., Virginia Polytechnic Institute and State University
M. Thomas
Affiliation:
Physics Dept., Virginia Polytechnic Institute and State University
J. J. Broderick
Affiliation:
Physics Dept., Virginia Polytechnic Institute and State University
R. S. Booth
Affiliation:
Onsala Space Observatory, Chalmers University of Technology
Robert L. Brown
Affiliation:
National Radio Astronomy Observatory
J. J. Condon
Affiliation:
National Radio Astronomy Observatory

Extract

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Scattering of radio waves off inhomogeneities in electron density in the interstellar medium can produce an apparent broadening in the angular diameter of an intrinsically compact background radio source. The magnitude and distribution of this effect at low galactic latitudes (|b|<5°) is not well known, although several cases suggest substantial broadening in certain directions, such as the Cygnus X region (Anderson et al. 1972), and the galactic center (Davies, Walsh, and Booth 1976). Large scattering in the plane is consistent with the scintillation properties of pulsars seen through substantial thicknesses (≳ 1 kpc) of the galactic disk.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 110: VLBI and Compact Radio Sources , 1984 , pp. 309 - 312
Copyright
Copyright © Reidel 1984 

References

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