Evolving parsec-scale radio structure in the most distant blazar known
Artikel i vetenskaplig tidskrift, 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.

mechanical property








T. An

Shanghai Astronomical Observatory

P. Mohan

Shanghai Astronomical Observatory

Y. K. Zhang

Chinese Academy of Sciences

Shanghai Astronomical Observatory

S. Frey

Magyar Tudomanyos Akademia

Jun Yang

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium

Krisztina E. Gabányi

Magyar Tudomanyos Akademia

Eötvös Loránd University (ELTE)

L. I. Gurvits

TU Delft

Joint Institute for VLBI in Europe (JIVE)

Z. Paragi

Joint Institute for VLBI in Europe (JIVE)

Krisztina Perger

Magyar Tudomanyos Akademia

Eötvös Loránd University (ELTE)

Zhenya Zheng

Shanghai Astronomical Observatory

Nature Communications

2041-1723 (ISSN) 20411723 (eISSN)

Vol. 11 1 143


Astronomi, astrofysik och kosmologi





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