GK045

RadioAstron-EVN-GBT: first Space VLBI dual-band 22 and 5 GHz imaging of AGNs

Abstract

We request EVN telescopes, including Robledo, and the GBT to perform the first dual-band 5
and 22 GHz Space VLBI imaging of bright active galactic nuclei 2013+370 and 2037+511,
supported by 8 GHz VLBI measurements of the spacecraft state vector. Through the
proposed experiment we will probe the cores of the objects at very high resolution, measure
their brightness temperatures to test the Compton catastrophe scenario and relativistic
beaming models, and produce the first ever SVLBI 22 GHz images incorporating calibration
bootstrapping from the 5 GHz results.
This proposal is submitted as part of the RadioAstron early science program.

Investigators

Name	Institution
Nikolai Kardashev	Lebedev Physical Institute
Kirill Sokolovsky	Illinois at Urbana-Champaign, University of
Leonid Gurvits	Joint Institute for Very Long Baseline Interferometry European Research Infrastructure Consortium
James Anderson	Deutsches GeoForschungsZentrum
Tony Zensus	National Radio Astronomy Observatory; Max-Planck-Institut für Radioastronomie
Gabriele Giovannini	Istituto Nazionale di Astrofisica
Michael Bietenholz	York University; Hartebeesthoek Radio Astronomy Observatory
Norbert Bartel	York University
Willem Baan	Netherlands Institute for Radio Astronomy
Yuri Kovalev *	Max-Planck-Institut für Radioastronomie

* indicates the PI