Evolving parsec-scale radio structure in the most distant blazar known
Journal article, 2020

Blazars are a sub-class of quasars with Doppler boosted jets oriented close to the line of sight, and thus efficient probes of supermassive black hole growth and their environment, especially at high redshifts. Here we report on Very Long Baseline Interferometry observations of a blazar J0906 + 6930 at z = 5.47, which enabled the detection of polarised emission and measurement of jet proper motion at parsec scales. The observations suggest a less powerful jet compared with the general blazar population, including lower proper motion and bulk Lorentz factor. This coupled with a previously inferred high accretion rate indicate a transition from an accretion radiative power to a jet mechanical power based transfer of energy and momentum to the surrounding gas. While alternative scenarios could not be fully ruled out, our results indicate a possibly nascent jet embedded in and interacting with a dense medium resulting in a jet bending.

probe

jet

momentum

accretion

emission

mechanical property

polarization

Author

T. An

Shanghai Astronomical Observatory

P. Mohan

Shanghai Astronomical Observatory

Y. K. Zhang

Chinese Academy of Sciences

Shanghai Astronomical Observatory

S. Frey

Hungarian Academy of Sciences

Jun Yang

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

Krisztina E. Gabányi

Hungarian Academy of Sciences

Eötvös Loránd University (ELTE)

L. I. Gurvits

Delft University of Technology

Joint Institute for VLBI in Europe (JIVE)

Z. Paragi

Joint Institute for VLBI in Europe (JIVE)

Krisztina Perger

Eötvös Loránd University (ELTE)

Hungarian Academy of Sciences

Zhenya Zheng

Shanghai Astronomical Observatory

Nature Communications

2041-1723 (ISSN)

Vol. 11 1 143

Subject Categories

Accelerator Physics and Instrumentation

Subatomic Physics

Astronomy, Astrophysics and Cosmology

DOI

10.1038/s41467-019-14093-2

PubMed

31919424

More information

Latest update

2/14/2020