Grand-design nuclear spiral as a signature of supermassive black hole

From hydrodynamical simulations for the response of gaseous disks to imposed potentials, including those of a bar and supermassive black hole (SMBH), we found that the morphology of nuclear features developed by gas flows driven by the bar depends strongly on the sound speed of gas and the mass of S...

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Bibliographic Details
Published inProceedings of the International Astronomical Union Vol. 2004; no. IAUS222; pp. 445 - 446
Main Author Ann, H. B.
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 01.03.2004
Subjects
Black holes (astronomy)
Diagnostic systems
Disks
Dynamics
Gas flow
Searching
Signatures
Simulation
Spirals
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Summary:From hydrodynamical simulations for the response of gaseous disks to imposed potentials, including those of a bar and supermassive black hole (SMBH), we found that the morphology of nuclear features developed by gas flows driven by the bar depends strongly on the sound speed of gas and the mass of SMBH which governs the potential shape in the central kiloparsec. Thus, nuclear features seem to provide a promising diagnostic for the inner dynamics of spiral galaxies. Specifically, a tightly wound grand-design nuclear spiral that winds more than 2π indicates the presence of an SMBH which is massive enough to remove the IILR.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html
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ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921304002844