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Centiarcsecond Structure and Variability of AGN

Published online by Cambridge University Press:  19 July 2016

D.R. Altschuler ,
L.I. Gurvits ,
W. Alef ,
D. Graham ,
B. Dennison ,
J.E. Carson  and
A.S. Trotter
D.R. Altschuler
Affiliation:
NAIC ∗∗ , Arecibo Observatory, P.O. Box 995, Arecibo, Puerto Rico 00613
L.I. Gurvits
Affiliation:
NAIC ∗∗ , Arecibo Observatory, P.O. Box 995, Arecibo, Puerto Rico 00613
W. Alef
Affiliation:
MPIfR, Auf dem Hügel 69, D–53121 Bonn, Germany
D. Graham
Affiliation:
MPIfR, Auf dem Hügel 69, D–53121 Bonn, Germany
B. Dennison
Affiliation:
Dept. of Physics, Virginia Polytech. Institute and State University, Blacksburg, VA 24061-0431, USA
J.E. Carson
Affiliation:
MIT, Cambridge MA 02139, USA
A.S. Trotter
Affiliation:
Harvard University, Cambridge, MA 02138, USA

Extract

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One possible approach to distinguish between “intrinsic” and “external” mechanisms for variability implies a study of possible correlations between flux variability and the fine structure of sources. We present results of snapshot global VLBI observations at 327 MHz of a sample of 16 extragalactic radio sources (1 radio galaxy, 9 quasars, 4 BL Lacs, 2 unidentified) selected on the basis of the bi-monthly flux monitoring at five frequencies (1400, 880, 606, 430, and 318 MHz). The observed source sample is presented in the Table I.

Type
Poster Contributions: Variability
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 389
Copyright
Copyright © Kluwer 1994