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High-Velocity Bipolar Molecular Emission from an AGN Torus

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arxiv 1608.02210 v1 pith:FEJPJGAX submitted 2016-08-07 astro-ph.GA

Jack F. Gallimore , Moshe Elitzur , Roberto Maiolino , Alessandro Marconi , Christopher P. O'Dea , Dieter Lutz , Stefi A. Baum , Robert Nikutta
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C. M. V. Impellizzeri Richard Davies Amy E. Kimball Eleonora Sani
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keywords emissionbipolardisknuclearobservationsoutflowroughlytorus
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We have detected in ALMA observations CO J = 6 - 5 emission from the nucleus of the Seyfert galaxy NGC 1068. The low-velocity (up to +/- 70 km/s relative to systemic) CO emission resolves into a 12x7 pc structure, roughly aligned with the nuclear radio source. Higher-velocity emission (up to +/- 400 km/s) is consistent with a bipolar outflow in a direction nearly perpendicular (roughly 80 degrees) to the nuclear disk. The position-velocity diagram shows that in addition to the outflow, the velocity field may also contain rotation about the disk axis. These observations provide compelling evidence in support of the disk-wind scenario for the AGN obscuring torus.

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    FIRE-3 cosmological simulations of Seyfert galaxies produce episodic AGN feedback and gas clearing but no clear anti-correlation between nuclear gas concentration and AGN luminosity, highlighting timing mismatches wit...

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