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VLBI and Broad-Band Radio Spectra Study of the Strongly Variable Extragalactic Object 0524+034

Published online by Cambridge University Press:  13 May 2016

Y.Y. Kovalev ,
A.G. Gorshkov ,
V.K. Konnikova  and
M.G. Mingaliev
Y.Y. Kovalev
Affiliation:
Astro Space Center of the Lebedev Physical Institute, Profsojuznaya 84/32, 117810 Moscow, Russia
A.G. Gorshkov
Affiliation:
Sternberg Astronomical Institute, Moscow, Russia
V.K. Konnikova
Affiliation:
Sternberg Astronomical Institute, Moscow, Russia
M.G. Mingaliev
Affiliation:
Special Astrophysical Observatory, N. Arkhyz, Russia

Abstract

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Results of the first measurements of a VLBI structure of 0524+034 at 6 cm at the EVN+HartRAO in 1999 and recent broad-band spectra monitoring data are reported. We suppose that precession of the relativistic jet can be one of the possible mechanisms to account for the observed milliarcsecond structure and the strong long-term variations of the spectrum. The detected rapid changes may be interpreted as a propagation of a shock in the inhomogeneous jet plasma, but interstellar scintillations can not be ruled out on the basis of available data.

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 100 - 101
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Chavushyan, V., et al., 2000, ALett, 26, 339.Google Scholar
Gorshkov, A. G., Konnikova, V. K., Mingaliev, M. G., 2000, ARep, 44, 161.Google Scholar
Kovalev, Y.Y., et al., 1999, A&AS, 139, 545.Google Scholar