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The Microarcsecond Quasar J1819+3845

Published online by Cambridge University Press:  13 May 2016

J. Dennett-Thorpe  and
A. G. de Bruyn
J. Dennett-Thorpe
Affiliation:
Kapteyn Institute, Postbus 800, Groningen, The Netherlands
A. G. de Bruyn
Affiliation:
Kapteyn Institute, Postbus 800, Groningen, The Netherlands ASTRON, Postbus 2, Dwingeloo, The Netherlands

Abstract

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We present new WSRT observations of the micro-arcsecond quasar J1819+3845. All short term variations are attributed to interstellar scintillation of a source which is at most 30 micro-arcseconds in diameter. The timescale of the modulations changes over the year, which we interpret as due to a peculiar velocity of the scattering medium. The scintillation behaviour can be used to determine sub-structure in the source.

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 88 - 89
Copyright
Copyright © Astronomical Society of the Pacific 2001