VSOP observations of the compact BL Lacertae object 1803+784

Details VSOP observations of the compact BL Lacertae object 1803+784 VSOP observations of the compact BL Lacertae object 1803+784

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999newar..43..691g&link_type=abstract

New Astronomy Reviews, Volume 43, Issue 8-10, p. 691-694.

Astronomy and Astrophysics

Astronomy

42

Scientific paper

Very Long Baseline Interferometry polarisation observations provide information about the magnetic-field structure of the parsec-scale jets in active galactic nuclei. 5-GHz VLBI polarisation observations of the compact BL Lacertae object 1803+784 were obtained in July 1998 with a global ground array plus the orbiting HALCA (VSOP) antenna. The extra resolution provided by baselines to the orbiting antenna has revealed a smoothly bent jet structure in 1803+784, with the magnetic field transverse all along the jet. This may indicate the presence of relativistic shocks, or possibly of a helical magnetic field surrounding the VLBI jet.

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