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Recent Observations and Superluminal Monitoring of the Quasar 3C 395

Published online by Cambridge University Press:  03 August 2017

R. S. Simon ,
K. J. Johnston  and
J. H. Spencer
R. S. Simon
Affiliation:
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D.C. 20375-5000
K. J. Johnston
Affiliation:
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D.C. 20375-5000
J. H. Spencer
Affiliation:
E. O. Hulburt Center for Space Research, Naval Research Laboratory, Washington, D.C. 20375-5000

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Until recently, the compact structure in 3C 395 could be described as follows (Simon et al. 1987):

  1. (1) A bright, unresolved, flat spectrum core to the northwest. The core brightened by about 0.4 Jy between 1983.3 and 1985.4, from 0.6 Jy to 1.0 Jy.

  2. (2) A moderately resolved component 15.8+/−0.2 mas to the southwest along P.A.I 18o. The position of this component relative to the core has changed by less than 0.2 mas in 6 years and the flux density of this component has remained roughly constant.

  3. (3) A component which was moving rapidly away from the core towards component (2) with a proper motion of 0.64+/−0.1 mas yr−1. For 3C 395 (z=0.635), this implies (v/c)∼20c for Ho =100 km/s/Mpc and qo =0.5.

Type
Extragalactic
Information
Symposium - International Astronomical Union , Volume 129: The Impact of VLBI on Astrophysics and Geophysics , 1988 , pp. 21 - 22
Copyright
Copyright © Reidel 1988 

References

Biermann, P., et al. 1987. In preparation.Google Scholar
Biretta, J. A., Moore, R. L., and Cohen, M. H. 1986. Ap. J. 308, 93.Google Scholar
Simon, R. S., Hall, J., Johnston, K. J., Spencer, J. H., Waak, J., and Mutel, R. L. 1987. Ap. J. Lett. (submitted).Google Scholar