Physics
Scientific paper
Jan 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001iaus..205...42b&link_type=abstract
Galaxies and their Constituents at the Highest Angular Resolutions, Proceedings of IAU Symposium #205, held 15-18 August 2000 at
Physics
1
Scientific paper
The nearby galaxy M81 is a grand-design spiral that resembles our own Galaxy in type, size, and mass. Like our Galaxy, it contains a nuclear radio source that is most likely associated with a supermassive black hole in the gravitational center of the galaxy. But while the nucleus of our Galaxy, Sgr A*, is largely hidden behind scattering clouds of gas, M81's nucleus is virtually unaffected by scatter broadening at most radio frequencies. M81 is also, at a distance of 3.65 Mpc the nearest spiral galaxy with an AGN. Our observations have shown that its center consists of a stationary core with a short, jittery, one-sided jet. We present results from our recent space-VLBI (VSOP) and ground VLBI observations and discuss the implications for our understanding of the center of M81.
Bartel Norbert
Bietenholz Michael F.
Rupen Michael P.
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