A jet proper motion study in the early Universe
Abstract
We constrained the jet proper motion of PMN J2134-0419 at z = 4.33 to μ = 0.035±0.023mas yr-1 using very long baseline interferometry (VLBI). This is the second most distant source where such a measurement could be made. Another distant blazar SDSS J1026+2542 (z = 5.27) shows jet component proper motions up to μ = 0.112 ± 0.031 mas yr-1. In both cases, the measured values are consistent with the expectations of current ΛCDM cosmological models.
- Publication:
-
Perseus in Sicily: From Black Hole to Cluster Outskirts
- Pub Date:
- 2020
- DOI:
- 10.1017/S174392131800385X
- Bibcode:
- 2020IAUS..342..252P
- Keywords:
-
- galaxies: active;
- galaxies: jets;
- galaxies: high-redshift;
- quasars: individual (PMN J2134-0419);
- quasars: individual (SDSS J1026+2542)