Multi-epoch VSOP observations of 1928+738

Details Multi-epoch VSOP observations of 1928+738 Multi-epoch VSOP observations of 1928+738

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003newar..47..633m&link_type=abstract

New Astronomy Reviews, Volume 47, Issue 6-7, p. 633-635.

Astronomy and Astrophysics

Astronomy

5

Radio Continuum: Galaxies Quasars: Individual (1928+738)

Scientific paper

We have undertaken a series of eight VSOP observations of the relatively low-redshift (z=0.3) core-dominated quasar 1928+738 in order to test the claims by Roos et al. [AJ 409 (1993) 130] that on the pc-scale this source shows evidence of a super-massive binary black hole system in the form of a precessing ballistic relativistic jet. We have detected a wide range of proper motions from nearly stationary (0.02 mas/yr or 0.5c) to relatively fast (0.82 mas/yr or 19c). We also find that the observed kinematics are more consistent with a ballistic precessing relativistic jet model than a relativistic helical jet model.

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