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

Published online by Cambridge University Press:  05 March 2013

B. G. Piner ,
P. G. Edwards ,
S. Fodor  and
T. A. Rector
B. G. Piner*
Affiliation:
Department of Physics and Astronomy, Whittier College, 13406 E. Philadelphia St., Whittier, CA 90608, USA
P. G. Edwards
Affiliation:
ISAS, Yoshinodai 3-1-1, Sagamihara, Kanagawa 229-8510, Japan
S. Fodor
Affiliation:
Department of Physics and Astronomy, Whittier College, 13406 E. Philadelphia St., Whittier, CA 90608, USA
T. A. Rector
Affiliation:
NOAO, 950 North Cherry Avenue, Tucson, AZ 85719, USA
*
gpiner@whittier.edu
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Abstract

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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: activegalaxies: jetsradio continuum: galaxiesradiation mechanisms: non-thermal
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 19 , Issue 1 , 2002 , pp. 114 - 116
Copyright
Copyright © Astronomical Society of Australia 2002

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