The Parsec-scale Jets of Extragalactic TeV Gamma-ray Sources

B. G. Piner; P. G. Edwards; S. Fodor; T. A. Rector

doi:10.1071/as01114

RESEARCH ARTICLE

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The Parsec-scale Jets of Extragalactic TeV Gamma-ray Sources

B. G. Piner, P. G. Edwards, S. Fodor and T. A. Rector

Publications of the Astronomical Society of Australia 19(1) 114 - 116
Published: 30 April 2002

Abstract

We present results of VLBI monitoring observations of the blazars detected by ground-based TeV gamma-ray telescopes. Preliminary results have shown that the apparent speeds of the parsec-scale jet features in these sources are predominantly subluminal, and significantly slower than those in the GeV-peaked (EGRET) gamma-ray blazars. Here we add results from additional sources and additional epochs that increase the statistical significance of this comparison. These slower speeds may indicate rapid deceleration of the jets in TeV blazars between the TeV gamma-ray emitting scales and VLBI scales.

Keywords: BL Lacertae objects: individual (Mrk 501, 1ES 1959+650, PKS 2155– 304, 1ES 2344+514) — galaxies: active — galaxies: jets — radio continuum: galaxies — radiation mechanisms: non-thermal

https://doi.org/10.1071/AS01114