2021MNRAS.504.3823W -
Mon. Not. R. Astron. Soc., 504, 3823-3830 (2021/July-1)
The obstructed jet in Mrk 231.
WANG A., AN T., JAISWAL S., MOHAN P., WANG Y., BAAN W.A., ZHANG Y. and YANG X.
Abstract (from CDS):
Mrk 231 is the closest radio-quiet quasar known and one of the most luminous infrared galaxies in the local Universe. It is characterized by the co-existence of a radio jet and powerful multiphase multiscale outflows, making it an ideal laboratory to study active galactic nucleus (AGN) feedback. We analyse the multi-epoch very long baseline interferometry data of Mrk 231 and estimate the jet head advance speed to be <=0.013 c, suggesting a sub-relativistic jet flow. The jet position angle changes from -113* in the inner parsec to -172* at a projected distance of 25 pc. The jet structure change might result from either a jet bending following the rotation of the circum-nuclear disc or the projection of a helical jet on the plane of the sky. In the large opening angle (∼60*) cone, the curved jet interacts with the interstellar medium and creates wide-aperture-angle shocks that subsequently dissipate a large portion of the jet power through radiation and contribute to powering the large-scale outflows. The low power and bent structure of the Mrk 231 jet, as well as extensive radiation dissipation, are consistent with the obstruction of the short-length jet by the host galaxy's environment.
Abstract Copyright:
© 2021 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.
Journal keyword(s):
galaxies: ISM - galaxies: jets - galaxies: kinematics and dynamics - quasars: individual: (Mrk 231)
Simbad objects:
8
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