Space-VLBI Observations of the Core-Jet in the Nearby Spiral Galaxy M81

Details Space-VLBI Observations of the Core-Jet in the Nearby Spiral Galaxy M81 Space-VLBI Observations of the Core-Jet in the Nearby Spiral Galaxy M81

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aprs.conf...17b&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

8

Scientific paper

M81 hosts the closest active galactic nucleus that can be imaged with VSOP. With a linear resolution of about 2,000 AU at 5 GHz the image shows the highest detail of any map of the core-jet yet. The jet can be traced over 3.5 mas or 12,000 AU and appears wavy with its orientation changing between about 60 degrees and 70 degrees reminiscent of a helical structure. On average the core-jet points towards the relatively weak lobe-like structure seen on kiloparsec scales and is approximately oriented along the rotation axis of the galaxy. The core-jet has structural similarities to the powerful AGN of radio galaxies and quasars and physical similarities to Sgr A*, and may therefore shed light on the structure and nature of the central source of our own Galaxy.

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