Hostname: page-component-77c89778f8-n9wrp Total loading time: 0 Render date: 2024-07-16T12:38:01.926Z Has data issue: false hasContentIssue false
  • English
  • Français

ISS of Polarized Compact Extragalactic Radio Sources

Published online by Cambridge University Press:  12 April 2016

Barney Rickett
Barney Rickett*
Affiliation:
University of California, San Diego, U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

It is shown that the detailed inter-relations of the 8.6 GHz IDV in Stokes’ parameters I, Q and U of the quasar 0405-385, as quantified by their auto and cross correlations, can be successfully modelled by interstellar scintillation (ISS) of a double source with two components separated by about 10 micro-arcseconds. Though this is not a unique source model it confirms that ISS can explain quantitatively the rapid variations in both flux and linear polarization. Thus there is no evidence in support of an intrinsic component in the IDV.

Keywords

InterstellarscintillationAGNpolarization
Type
Chapter Three Intra-Day Variability, Gravitational Lensing and Polarization
Information
International Astronomical Union Colloquium , Volume 182: Sources and Scintillations: Refraction and Scattering in Radio Astronomy , 2001 , pp. 129 - 134
Copyright
Copyright © Kluwer 2001

References

Dennett-Thorpe, J. and de Bruyn, A.G.: 2000, The Discovery of a Microarcsecond Quasar: J1819+3845, Astrophys. J. 529, L65–L68.CrossRefGoogle ScholarPubMed
Kedziora-Chudczer, L., Jauncey, D.L., Wieringa, M.H., Walker, M.A., Nicholson, G.D., Reynolds, J.E. and Tzioumis, A.K.: 1997, PKS 0405-385: The Smallest Quasar?, Astrophys. J. 490, L9–12.CrossRefGoogle Scholar
Little, L.T. and Hewish, A.: 1966, Interplanetary Scintillation and its Relation to the Angular Structure of Radio Sources, Mon. Not. R. Astron. Soc. 134, 221–237.Google Scholar
Quirrenbach, A., Witzel, A., Krichbaum, T.P., Hummel, C.A., Alberdi, A. and Schalinski, C.: 1989a, Rapid Variability of Extragalactic Radio Sources, Nature 337, 442–444.Google Scholar
Quirrenbach, A., Witzel, A., Qian, S.J., Krichbaum, T.P., Hummel, C.A. and Alberdi, A.: 1989b, Rapid radio polarization variability in the quasar 0917+624, Astron. Astrophys. 226, L1–L4.Google Scholar
Rickett, B.J.: 1990, Radio propagation through the Turbulent Interstellar Plasma, Annu. Rev. Astron. Astrophys. 28, 561–605.Google Scholar
Rickett, B.J., Coles, W.A. and Markkanen, J.: 2000, Interstellar Scintillation of Pulsar B0809+74, Astrophys. J. 533, 304–319.Google Scholar
Rickett, B.J., Quirrenbach, A., Wegner, R., Krichbaum, T. and Witzel, A.: 1995, Interstellar Scintillation of the Radi Source 0917+624, Astron. Astrophys. 293, 479–192.Google Scholar