Detection of a parsec-scale jet in a radio-quiet narrow-line Seyfert 1 galaxy with highly accreting supermassive black hole
Journal article, 2021

The jet in active galactic nuclei (AGN) is a key ingredient in understanding the co-evolution of galaxies and their central supermassive black holes (SMBHs). Unfortunately, the mechanism of jet launching and collimation is still elusive. The observational evidence of decreasing radio loudness with increasing Eddington ratio implies that the jet should be coupled with the accretion process. To further explore the relationship between the jet and accretion, it is necessary to extend our knowledge of the jet to an extreme end of the Eddington ratio distribution of AGN. Using Very Long Baseline Array (VLBA), we report the detection of the parsec-scale radio structure in Mrk 335, a radio-quiet narrow-line Seyfert 1 galaxy with an Eddington ratio close to/above unity. The VLBA image at 1.5 GHz reveals an elongated structure extending ∼20 pc in north-south direction with a peak flux density of 1.98 ± 0.05 mJy beam-1 and radio brightness temperatures as high as 6 × 107 K. This feature provides a strong evidence of a parsec-scale (bipolar) jet launched from a highly accreting SMBH. We discuss the result by comparing Mrk 335 with other highly accreting systems, e.g. Galactic black holes and tidal disruption events, and recall the discovery of collimated corona in the vicinity of SMBH in Mrk 335 by previous X-ray observations, whose relation to the parsec-scale radio jet should be explored by future simultaneous X-ray spectroscopy and high resolution radio observations.

Galaxies: Seyfert

Galaxies: Jets

Galaxies: Active

Galaxies: nuclei

Galaxies: Individual: Mrk 335


Su Yao

Max Planck Society

Xiaolong Yang

Shanghai Astronomical Observatory

Beijing University of Technology

Minfeng Gu

Shanghai Astronomical Observatory

T. An

Shanghai Astronomical Observatory

Jun Yang

Chalmers, Space, Earth and Environment, Onsala Space Observatory, Observation Support

Luis C. Ho

Beijing University of Technology

Xiang Liu

Chinese Academy of Sciences

Ran Wang

Beijing University of Technology

Xue Bing Wu

Beijing University of Technology

Weimin Yuan

Chinese Academy of Sciences

Monthly Notices of the Royal Astronomical Society

0035-8711 (ISSN) 1365-2966 (eISSN)

Vol. 508 1 1305-1313

Subject Categories

Subatomic Physics

Astronomy, Astrophysics and Cosmology

Fusion, Plasma and Space Physics



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