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
probe
emission
polarization
accretion
momentum
jet
Författare
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 143Ämneskategorier
Astronomi, astrofysik och kosmologi
DOI
10.1038/s41467-019-14093-2
PubMed
31919424