Accretion and Outflow Traced by Water Masers in the Circinus AGN

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dc.creatorGreenhill, L. J.
dc.creatorMoran, J. M.
dc.creatorBooth, R. S.
dc.creatorEllingsen, S. P.
dc.creatorMcCulloch, P. M.
dc.creatorJauncey, D. L.
dc.creatorNorris, R. P.
dc.creatorReynolds, J. E.
dc.creatorTzioumis, A. K.
dc.creatorHerrnstein, J. R.
dc.date2000-12-01
dc.date.accessioned2026-07-07T01:56:48Z
dc.date.available2026-07-07T01:56:48Z
dc.descriptionThe first VLBI images of water maser emission in the Circinus Galaxy AGN show both a warped, edge-on accretion disk and an outflow 0.1 to 1 pc from the central engine. The inferred central mass is 1.3 million suns, while the disk mass may be on the order of 0.1 million suns, based on a nearly Keplerian rotation curve. The bipolar, wide-angle outflow appears to contain ``bullets'' ejected from within <0.1 pc of the central mass. The positions of filaments and bullets observed in the AGN ionization cone on kpc-scales suggest that the disk channels the flow to a radius of about 0.4 pc, at which the flow appears to disrupt the disk.
dc.description4 pages. Contributed talk at IAU Symposium 205: Galaxies and their Constituents at the Highest Angular Resolutions, Manchester UK, August 2000. Proceedings to be published by ASP, edited by R. Schilizzi, S. Vogel, F. Paresce, M. Elvis
dc.identifierhttps://arxiv.org/abs/astro-ph/0012032
dc.identifierhttp://arxiv.org/abs/astro-ph/0012032
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/2138
dc.subjectAstrophysics
dc.titleAccretion and Outflow Traced by Water Masers in the Circinus AGN
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