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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 421544.0, MPI für Astronomie / Publikationen_mpia
Resolving the dust tori in AGN with the VLT interferometer
Authors:Meisenheimer, K.; Tristram, K.; Jaffe, W.
Language:English
Publisher:Springer
Place of Publication:Berlin
Date of Publication (YYYY-MM-DD):2008
Title of Proceedings:Relativistic Astrophysics Legacy and Cosmology – Einstein’s
Start Page:253
End Page:260
Name of Conference/Meeting:Relativistic Astrophysics Legacy and Cosmology - Einstein's
Review Status:not specified
Audience:Not Specified
Abstract / Description:The MID-infrared Interferometric instrument (MIDI) at the VLT Interferometer (VLTI) is the ideal instrument to resolve the emission of the putative dust tori in nearby AGN. Indeed, the first successful MIDI observations of the brightest and nearest Seyfert II galaxies - NGC 1068 and the Circinus galaxy - already provided us with an unexpected wealth of information about the dust distribution and properties in the inner few parsec. Observations of the closest radio galaxy - Centaurus A - reveal a unresolved 10 mum source (< 0.2 pc) which presumably represents the base of the radio jet. About a dozen extragalactic sources will be accessible to MIDI, and will allow us to tackle two important issues of AGN physics: (1) are torus-shaped dust structures and our various viewing angles into them indeed responsible for the apparent differences in Seyfert I and II galaxies, and (2) how does the gas reservoir in these tori feed the accretion disks around the black holes?
Comment of the Author/Creator:Date: 2008, n/a 1, 2008
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISBN:978-3-540-74712-3 [ID No:1]
URL:http://adsabs.harvard.edu/abs/2008ralc.conf..253M [ID No:2]
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