GK047

RadioAstron-EVN-GBT: first Space VLBI polarization imaging

Abstract

We request EVN telescopes and the GBT to perform the first dual-polarization 1.6 GHz
SVLBI imaging of the bright high redshift quasar 0642+449, supported by 8 GHz VLBI
measurements of the spacecraft state vector. Through the proposed experiment we will
probe the core of the object at a very high resolution. Linear polarization properties will trace
the AGN magnetic field structure at fine scales never reachable before. The core brightness
temperature estimate will help to test the Compton catastrophe scenario. This project will also
serve the RadioAstron technical goal of accurate determination of the space radio telescope
leakage term at L-band.
This proposal is submitted as part of the RadioAstron early science program.

Investigators

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

* indicates the PI