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The Microarcsecond Quasar J1819+3845: Polarization Observations and Detailed Light Curve Analysis

  • A. G. de Bruyn
  • J. Dennett-Thorpe
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Abstract

The quasar 11819+3845 shows exceedingly rapid variations in both total intensity andlinear polarization. These are attributed to interstellar scintillation. The source contains at leasttwo structural components each of which shows variable polarization behaviour. The polarizationvariations are generally, but perhaps not always, coherent over the 80 MHz band setting. The 6 cmlightcurves in the first few months of 2000 hint at a time-asymmetric behaviour as could be expectedfrom an asymmetric source structure.

Keywords

Radio Source Asymmetry Direction Source Structure Compact Component Extragalactic Radio Source 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Dennett-Thorpe, J. and de Bruyn, A.G.: 2000, The discovery of a microarcsecond quasar: J1819+3845, Astrophys. J. Lett. 529, 65–68.ADSCrossRefGoogle Scholar
  2. Rickett, B.J., Quirrenbach, A., Wegner, R., Krichbaum, T. and Witzel, A.: 1995, Interstellar sscintillation of the Radio Source 0917+624, Astron. Astrophys. 293, 479–492.ADSGoogle Scholar
  3. Salpeter, E.E.: 1967, Interstellar scintillation. I. Theory, Astrophys. J. 147, 433.ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2001

Authors and Affiliations

  • A. G. de Bruyn
    • 1
  • J. Dennett-Thorpe
    • 1
  1. 1.ASTRON, Dwingeloo and Kapteyn InstituteGroningenNetherlands

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