Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000stin...0005163m&link_type=abstract
Astrophysical Phenomena Revealed by Space VLBI, p. 39
Astronomy and Astrophysics
Astronomy
Observation, Gamma Rays, Blazars, Quasars, Radio Emission, Radio Jets (Astronomy), Stellar Flares, Imaging Techniques, Synchrotron Radiation, Gamma Ray Observatory, Spaceborne Astronomy, X Ray Timing Explorer
Scientific paper
We report on the results of high-frequency VLBA observations of 42 gamma-ray bright blazars monitored at 22 and 43 GHz between 1993.9 and 1997.6. In 1997 the observations included polarization-sensitive imaging. The cores of gamma-ray blazars are only weakly polarized, with EVPAs (electric-vector position angles) usually within 40 deg of the local direction of the jet. The EVPAs of the jet components are usually within 20 deg of the local jet direction. The apparent speeds of the gamma-ray bright blazars are considerably faster than in the general population of bright compact radio sources. Two X-ray flares (observed with RXTE) of the quasar PKS 1510-089 appear to be related to radio flares, but with the radio leading the X-ray variations by about 2 weeks. This can be explained either by synchrotron self-Compton emission in a component whose variations are limited by light travel time or by the Mirror Compton model.
Aller Margo F.
Marchenko-Jorstad S. G.
Marscher Alan P.
Mattox John R.
Wehrle Ann E.
No associations
LandOfFree
High-Frequency Observations of Blazars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High-Frequency Observations of Blazars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-Frequency Observations of Blazars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-811533