Published January 1989 | Version v1
Journal article Metadata-only

Superluminal motion in the BL Lacertae object OJ 287

Creators

  • 1. California Institute of Technology, Pasadena (USA)
  • 2. Brandeis Univ., Waltham, MA (USA)

Description

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). 16 references

Additional details

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
336
Series
Astrophys. J.
Journal Page Range
L59-L62
ISSN
0004-637X
CODEN
ASJOA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
20047511
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
BL LACERTAE OBJECTS; DOPPLER EFFECT; INTERFEROMETRY; LUMINOSITY; MORPHOLOGICAL CHANGES; MOTION; PLASMA JETS; POLARIZATION; RADIO GALAXIES
Descriptors DEC
COSMIC RADIO SOURCES; COSMIC RAY SOURCES; COSMIC X-RAY SOURCES; GALAXIES; OPTICAL PROPERTIES; PHYSICAL PROPERTIES