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Tracking the moving optical photocenters of active galaxies: binary black holes, accretion disks and relativistic jets

Wehrle, A. and Unwin, S. C. and Jones, D. L. and Meier, D. L. and Piner, B. G. (2003) Tracking the moving optical photocenters of active galaxies: binary black holes, accretion disks and relativistic jets. In: Interferometry in Space. Proceedings of SPIE. No.4852. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 152-160. ISBN 9780819446312. https://resolver.caltech.edu/CaltechAUTHORS:20190221-110515783

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Abstract

We will use the astrometric capabilities of the SIM to answer three key questions about active galactic nuclei: 1) Does the separation of the radio core and optical photocenter of quasars change on the same timescale as their photometric variability, or is the separation stable? 2) Does the most compact optical emission from an active galactic nucleus come from an accretion disk or from a relativistic jet? 3)Do the cores of galaxies harbor binary supermassive black holes remaining from galaxy mergers? We will compare the radio and optical positions of quasars used in the tie between optical and radio celestial reference frames. During the first year after launch, we will be able to show whether the frame tie will be limited by 'astrophysical noise'.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.460869DOIArticle
ORCID:
AuthorORCID
Jones, D. L.0000-0002-7902-996X
Additional Information:© 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). The research described in this paper was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASA/JPL/CaltechUNSPECIFIED
Subject Keywords:Space Interferometry Mission, SIM, Quasar, Astrometry, Active Galactic Nucleus
Series Name:Proceedings of SPIE
Issue or Number:4852
Record Number:CaltechAUTHORS:20190221-110515783
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190221-110515783
Official Citation:Ann E. Wehrle, Stephen C. Unwin, Dayton L. Jones, David L. Meier, and B. Glenn Piner "Tracking the moving optical photocenters of active galaxies: binary black holes, accretion disks and relativistic jets", Proc. SPIE 4852, Interferometry in Space, (26 February 2003); doi: 10.1117/12.460869; https://doi.org/10.1117/12.460869
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93032
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:05 Mar 2019 00:27
Last Modified:09 Mar 2020 13:18

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