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Origin of non-keplerian motions of masers in NGC 1068

Jean-Marc Hure
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Abstract

We demonstrate that the ``sub-keplerian'' rotation curve of maser spots in NGC 1068 can be explained by the gravitational attraction of the disc orbiting the central black hole. Possible parameters matching observations are: black hole mass of 12 million solar masses, disc outer edge > 1.3 pc, aspect ratio in the range 0.003 to 0.3, surface density varying approximately as 1/R, and disc mass of about 9.4 million solar masses. The physical conditions required for the excitation of masers are fulfilled, and the outer disc would stand in a gravitationally marginally stable state.

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Jean-Marc Hure. 2002-10-09. Origin of non-keplerian motions of masers in NGC 1068. https://doi.org/10.1051/0004-6361%3A20021445

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