The radio fine structure of the BL Lacertae object 0735 + 178

Details The radio fine structure of the BL Lacertae object 0735 + 178 The radio fine structure of the BL Lacertae object 0735 + 178

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...243..328b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 243, no. 2, March 1991, p. 328-332.

Astronomy and Astrophysics

Astronomy

27

Bl Lacertae Objects, Radio Sources (Astronomy), Astronomical Models, Fine Structure, Very Long Base Interferometry

Scientific paper

The BL Lacertae object 0735 + 178 has been mapped with global VLBI arrays at four epochs from 1979 to 1983. The hybrid maps presented in this paper show a complex structure with a component separating from the core with an apparent transverse velocity of about 7.9 c. A model is suggested in which new components are born in the core during an outburst, initially move away toward northeast and then at a distance of about 4.2 mas turn toward the southeast. At this point, the component does not show any discernible motion away from the core. It is suggested that the jet curls toward the south and toward the observer and at this point has its minimum viewing angle, with maximum boosting and minimum apparent velocity. The outburst of 1989 is associated with the event when a superluminally moving component reaches the point.

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