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The compact radio structure of the high‐redshift quasar OQ172
Author(s) -
Liu Y.,
Jiang D. R.,
Gu M.,
Gurvits L. I.
Publication year - 2016
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.201512273
Subject(s) - very long baseline interferometry , physics , quasar , astrophysics , redshift , sky , spectral line , astronomy , observatory , galaxy
The GHz‐Peaked Spectrum (GPS) quasar OQ172 (J1445+0958) has an extremely high rest‐frame rotation measure (RM > 20000 rad m –2 ) and an RM gradient in its inner nucleus. Its jet observed with Very Long Baseline Interferometry (VLBI) is strongly bent along an arc spanning > 100 pc. Near infrared (NIR) spectra reveal an unusually large [O III ] line width which suggests a large mass within the NLR and/or strong interactions between the emerging jet and the dense material therein. We present our VLBI Space Observatory Programme (VSOP) and Multi‐frequency Very Long Baseline Array (VLBA) observation of the GPS quasar OQ172. The observations will help us to explore the VLBI radio properties and to better understand the circumnuclear environment of OQ172. (© 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)