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PKS 0405–385 as Seen by the ISM Telescope

Published online by Cambridge University Press:  12 April 2016

L. L. Kedziora-Chudczer ,
M. A. Walker ,
D. L. Jauncey ,
M. H. Wieringa ,
J. E. Reynolds ,
A. K. Tzioumis  and
G. D. Nicolson
L. L. Kedziora-Chudczer
Affiliation:
Research Centre for Theoretical Astrophysics, The University of Sydney, NSW, Australia
M. A. Walker
Affiliation:
Research Centre for Theoretical Astrophysics, The University of Sydney, NSW, Australia
D. L. Jauncey
Affiliation:
Australia Telescope National Facility, CSIRO, Sydney NSW, Australia
M. H. Wieringa
Affiliation:
Australia Telescope National Facility, CSIRO, Sydney NSW, Australia
J. E. Reynolds
Affiliation:
Australia Telescope National Facility, CSIRO, Sydney NSW, Australia
A. K. Tzioumis
Affiliation:
Australia Telescope National Facility, CSIRO, Sydney NSW, Australia
G. D. Nicolson
Affiliation:
Hartebeesthoek Radio Astronomy Observatory, Krugersdorp, South Africa

Abstract

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We have found large amplitude intraday variability in the radio quasar PKS 0405–385 on timescales less than an hour. If intrinsic to the source, the inferred brightness temperature is TB ~ 1021 K, far exceeding the inverse Compton limit for a static synchrotron source. We argue that our data are in agreement with interstellar scintillations of a source component which is < 5μarcsec in size.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 164: Radio Emission from Galactic and Extragalactic Compact Sources , 1998 , pp. 267 - 268
Copyright
Copyright © Astronomical Society of the Pacific 1998

References

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