SIMBAD references

2011A&A...530A.129M - Astronomy and Astrophysics, volume 530A, 129-129 (2011/6-1)

On the influence of the Sun on the rapid variability of compact extragalactic sources.

MARCHILI N., KRICHBAUM T.P., LIU X., SONG H.-G., ANDERSON J.M., WITZEL A. and ZENSUS J.A.

Abstract (from CDS):

Since December 2004, we have performed a program to monitor intraday variable sources at a frequency of 5 GHz at the Urumqi Observatory. We present our analysis of the variability characteristics of the flat-spectrum radio source AO 0235+164, which detects an annual cycle in the variability amplitude. This appears to correlate with the solar elongation of the source. A thorough analysis of the results of the MASIV IDV survey - which provides the variability characteristics of a large sample of compact radio sources - confirms that there is a small but detectable component of the observed fractional modulation that increases with decreasing solar elongation. We discuss the hypothesis that the phenomenon is related to interplanetary scintillation.

Abstract Copyright:

Journal keyword(s): scattering - quasars: individual: AO 0235+164 - radio continuum: general - solar wind - surveys

Simbad objects: 10

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