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- W2897954434 abstract "Emission line observations of circumnuclear gas disks in the ALMA era have begun to resolve molecular gas tracer kinematics near supermassive black holes (BHs), enabling highly precise mass determination in the best cases. The ngVLA is capable of extremely high spatial resolution imaging of the CO(1-0) transition at 115 GHz for nearby galaxies. Furthermore, its high (anticipated) emission line sensitivity suggests this array can produce benchmark BH mass measurements. We discuss lessons learned from gas-dynamical modeling of recent ALMA data sets and also compare ALMA and ngVLA CO simulations of a dynamically cold disk. While only a fraction of all local galaxies likely possess sufficiently bright, regularly-rotating nuclear molecular gas, in such cases the ngVLA is expected to more efficiently resolve such emission arising at a projected 50-100 mas from the central BH." @default.
- W2897954434 created "2018-10-26" @default.
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- W2897954434 date "2018-10-15" @default.
- W2897954434 modified "2023-09-27" @default.
- W2897954434 title "Science with an ngVLA: Precision Gas-dynamical Mass Measurement of Supermassive Black Holes with the ngVLA" @default.
- W2897954434 hasPublicationYear "2018" @default.
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