Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9782a&link_type=abstract
HST Proposal ID #9782
Physics
Hst Proposal Id #9782 Agn/Quasars
Scientific paper
To date there have been few black hole {BH} mass estimates for luminous broad line AGN, including those derived from reverberation mapping. In this context, objects with "double-peaked" broad lines are particularly important because the line emission is believed to arise in a relativistically rotating accretion disk. If this model is correct, then the BH mass can be determined directly from periodic variations in the line-profile shape. In two cases {Arp 102B and NGC 1097} such variations have been claimed. The goal of this proposal is to confront the relativistic disk model for the double-peaked Balmer lines with independent limits on the central masses for 5 of the nearest and brightest "double-peaked emitters" {NGC 1097, Arp 102B, Pictor A, 3C390.3, 3C332}, determined by using STIS long-slit spectroscopy to map the velocity field of circum-nuclear ionized gas. These observations will critically test the idea that the line emission in these objects comes from an accretion disk and thus provide unique insights into the physical processes operating in both the BLR and the "central engine".
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