Q0906+6930: The Highest Redshift Blazar
Abstract
We report the discovery of a radio-loud flat-spectrum QSO at z=5.47 with properties similar to those of the EGRET γ-ray blazars. This source is the brightest radio QSO at z>5, with a parsec-scale radio jet and a black hole mass estimate >~1010 Msolar. It appears to be the most distant blazar discovered to date. High-energy observations of this source can provide powerful probes of the background radiation in the early universe.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 2004
- DOI:
- 10.1086/423201
- arXiv:
- arXiv:astro-ph/0406252
- Bibcode:
- 2004ApJ...610L...9R
- Keywords:
-
- Galaxies: Jets;
- Galaxies: Quasars: General;
- Astrophysics
- E-Print:
- To appear in the Astrophysical Journal Letters. 5pp, 3figures
