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The Influence of Propagation through the Irregular Interstellar Plasma on VLBI Observations

Published online by Cambridge University Press:  03 August 2017

B.J. Rickett  and
W.A. Coles
B.J. Rickett
Affiliation:
Electrical and Computer Engineering Department, University of California San Diego, La Jolla, Ca 92093
W.A. Coles
Affiliation:
Electrical and Computer Engineering Department, University of California San Diego, La Jolla, Ca 92093

Extract

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It has been known since pulsars were discovered that the interstellar medium (ISM) can cause angular broadening of radio sources. However, the amount of scattering along typical lines of sight to extra-galactic sources is not large enough to cause any loss of visibility, even on intercontinental baselines, unless the frequency is below about 100 MHz. Recent studies have shown that interstellar scattering (ISS) can have considerably stronger effects; this paper addresses their relevance to VLBI.

Type
Galactic
Information
Symposium - International Astronomical Union , Volume 129: The Impact of VLBI on Astrophysics and Geophysics , 1988 , pp. 287 - 294
Copyright
Copyright © Reidel 1988 

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