Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aprs.conf..129m&link_type=abstract
Astrophysical Phenomena Revealed by Space VLBI, Proceedings of the VSOP Symposium, held at the Institute of Space and astronauti
Astronomy and Astrophysics
Astrophysics
2
Scientific paper
Polarization-sensitive VLBI is an effective probe of local jet flow and pattern structure via compression or stretching of tangled field lines in shocked or boundary regions in the synchrotron plasma. In sources thought to have jets most closely aligned with our line of sight, projection effects can exaggerate 3-dimensional bending and when combined with aberration, yield complex apparent polarization structure in VLBI images. HALCA represents a unique opportunity to better resolve and model this complex structure at lower frequencies where the jet material remains strong, yet where ground-only VLBI hasn't sufficient resolution. We present some initial results of polarization-sensitive 5 GHz VSOP observations of the bright quasar 3C345 and the gamma-ray blazar 0234+285. Both sources reveal interesting polarization structure which is relevant to jet models.
Moellenbrock George A.
Roberts David H.
Wardle John F. C.
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