PoS - Proceedings of Science
Volume 344 - 14th European VLBI Network Symposium & Users Meeting (EVN2018) - Posters about AGN
Interstellar Scintillation Monitoring of the RadioAstron Blazars
J. Liu,* T.P. Krichbaum, H.E. Bignall, X. Liu, A. Kraus, Y. Kovalev, K. Sokolovsky, G. Cimò, A. Zensus
*corresponding author
Full text: pdf
Pre-published on: October 02, 2019
Published on: October 09, 2019
The RadioAstron space radio telescope provides a unique opportunity to study the extreme brightness temperatures ($\mathrm{T_B}$) in AGNs with unprecedented long baselines of up to 28 Earth diameters. Since interstellar scintillation (ISS) may affect the visibilities observed with space VLBI (sVLBI), a complementary ground based flux density monitoring of the RadioAstron targets, which is performed near in time to the VLBI observation, could be beneficial. The combination/comparison with the sVLBI data can help to unravel the relative influence of source intrinsic and ISS induced effects, which in the end may alter the conclusions on the $\mathrm{T_B}$ measurements from sVLBI. Since 2013, a dedicated monitoring program has been ongoing to observe the ISS of RadioAstron AGN targets with a number of radio telescopes. Here we briefly introduce the program and present results from the statistical analysis of the Effelsberg monitoring data. We discuss the possible effects of ISS on $\mathrm{T_B}$ measurements for the RadioAstron target B0529+483 as a case study.
DOI: https://doi.org/10.22323/1.344.0112
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.