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VLBI Observations of Intraday Variability

Published online by Cambridge University Press:  12 April 2016

D. C. Gabuzda ,
P. Yu. Kochanev  and
R. I. Kollgaard
D. C. Gabuzda
Affiliation:
Astro Space Center, Lebedev Physical Institute, 117924 Moscow, Russia
P. Yu. Kochanev
Affiliation:
Sternberg Astronomical Institute, 119899 Moscow, Russia
R. I. Kollgaard
Affiliation:
Fermi National Accelerator Laboratory, Batavia, IL 60510, U.S.A.

Abstract

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Integrated VLA measurements during our 6 cm global VLBI polarization observations of the intraday variable sources 0716+714, 0917+624, and 0954+658 indicate that although there were no significant total intensity variations during the 24-hour VLBI experiment, the polarization for all three sources varied substantially. Independent polarization images made for 2–3 hour segments show that there were no variations on VLBI scales for 0716+714 or 0954+658, but that there were appreciable variations in the VLBI core of 0917+624, which correlate well with the integrated variations in the simultaneous VLA data.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 164: Radio Emission from Galactic and Extragalactic Compact Sources , 1998 , pp. 265 - 266
Copyright
Copyright © Astronomical Society of the Pacific 1998

References

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