The Boston University blazar research group has been monitoring a sample of γ -ray blazars with the Very Long Baseline Array at 43 GHz since the launch of the Fermi Gamma-ray Space Telescope. The sample includes three gamma-ray quasars, 1222+216, 3C279, and PKS1510-089, which have been recently detected at E>0.1 TeV (VHE) with Cherenkov telescopes. The quasar 1222+216 has flared already twice at VHE γ -rays during the Fermi era. We present an analysis of the kinematics of the inner parsec-scale jet of 1222+216 during quiescent states and VHE events and discuss the possible mechanisms for VHE photon production and the location of the VHE emission sites.

Original languageEnglish
Article number017
JournalProceedings of Science
Volume2016-January
StatePublished - 2016
Event4th Annual Conference on High Energy Astrophysics in Southern Africa, HEASA 2016 - Cape Town, South Africa
Duration: 13 Jan 2016 → …

    Scopus subject areas

  • General

ID: 86248420