Superluminal motion in the BL Lacertae object OJ 287

Details Superluminal motion in the BL Lacertae object OJ 287 Superluminal motion in the BL Lacertae object OJ 287

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...336l..59g&link_type=abstract

Astrophysical Journal (ISSN 0004-637X), vol. 336, Jan. 15, 1989, p. L59-L62.

Other

67

Bl Lacertae Objects, Polarized Radiation, Doppler Effect, Luminosity, Radio Galaxies, Very Long Base Interferometry

Scientific paper

New observations of the total intensity structure of the BL Lacertae object OJ 287 have been made with an angular resolution of 7 x 1 mas at 6 cm. The source consists of a core and three knots in a VLBI jet at position angle of about -100 deg. Previously suspected superluminal motion in the outer two knots (based primarily on VLBI polarimetry) has been confirmed. It is suggested that the comparatively modest superluminal motions seen in BL Lacertae objects are due to systematically slower jet pattern speeds than those of other superluminal sources (mostly quasars).

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