VLBI observations of the quasar DA 193

Details VLBI observations of the quasar DA 193 VLBI observations of the quasar DA 193

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....96..365s&link_type=abstract

Astronomy and Astrophysics, vol. 96, no. 1-2, Mar. 1981, p. 365-368.

Astronomy and Astrophysics

Astronomy

9

Quasars, Radio Astronomy, Very Long Base Interferometry, Continuous Spectra, Diffraction Patterns, Synchrotron Radiation

Scientific paper

The structure of DA 193 has been studied at 10.65 GHz using the U.S. VLBI network and the Effelsberg radiotelescope. It is a core-halo source, most of the flux coming from a region less than one milli-arc s (3 pc) in extent. The shape of the observed radio continuum spectrum can be closely reproduced using this structure and simple assumptions involving only synchrotron self-absorption; any other mechanisms which can influence the spectrum are therefore probably not significant in this source.

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