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Compact Jets in 100 AGNs with the Strongest Broad-Band Variability of 1-22 GHz Spectra in 1997-2001

Published online by Cambridge University Press:  12 April 2016

Yu. A. Kovalev ,
Y. Y. Kovalev ,
N. A. Nizhelsky  and
A. V. Bogdantsov
Yu. A. Kovalev
Affiliation:
Astro Space Center of theLebedev Physical Institute RAS, Profsoyuznaya 84/32, 117997 Moscow, Russia
Y. Y. Kovalev
Affiliation:
Astro Space Center of theLebedev Physical Institute RAS, Profsoyuznaya 84/32, 117997 Moscow, Russia
N. A. Nizhelsky
Affiliation:
Special Astrophysical Observatory RAS, Nizhnij Arkhyz, 369167Russia
A. V. Bogdantsov
Affiliation:
Special Astrophysical Observatory RAS, Nizhnij Arkhyz, 369167Russia

Abstract

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Results of monitoring observations at the radio telescope RATAN-600 and a model interpretation of instantaneous 1-22 GHz spectra at six frequencies for 100 selected AGNs are presented. The index of variability at these frequencies is shown for 550 sources monitored in 1997-2001 at 11 epochs. The spectra of the selected sources exhibit flux density variations of about 50% and up. The type of spectral evolution is similar for all the selected objects, favoring the same basic physical model. Model analysis shows that the nature of the radio sources and the observed variability behavior of the spectra can be explained by a model with a relativistic jet of parsec scale in a longitudinal magnetic field.

Type
Part 4. Radio Surveys for AGN
Information
International Astronomical Union Colloquium , Volume 184: AGN Surveys , 2002 , pp. 297 - 298
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Kovalev, Y.Y., Nizhelsky, N.A., Kovalev, Yu.A., et al. 1999, A&AS, 139, 545 Google Scholar
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