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VLA observations of rapid variability in OJ287*

Published online by Cambridge University Press:  19 July 2016

David H. Roberts ,
John W. Dreher  and
Joseph Lehår
David H. Roberts
Affiliation:
Department of Physics, Brandeis University, Waltham, MA 02254 USA
John W. Dreher
Affiliation:
Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
Joseph Lehår
Affiliation:
Department of Physics, Brandeis University, Waltham, MA 02254 USA Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139 USA

Abstract

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Using the VLA at 6 cm, we have detected non-periodic variations in the powerful BL Lacertae object OJ287 on timescales between minutes and hours at levels of the order of one percent. Brightness temperatures inferred from causality arguments range from 1016 to 1020 K. No periodic component was found to a limit of 0.1%.

Type
II. Continuum Emission
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 91 - 92
Copyright
Copyright © Reidel 1986 

References

Dreher, J.W., Roberts, D.H., and Lehár, J. 1986, to be published.Google Scholar
Lehar, J. 1985, , Physics Dept., Brandeis University.Google Scholar
Valtaoja, E. et al. 1985, Nature, 314, 148.CrossRefGoogle Scholar