Tracking the moving optical photocenters of active galaxies: binary black holes, accretion disks and relativistic jets
- Other:
- Shao, Michael
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'.
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.Attached Files
Published - 152.pdf
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Additional details
- Eprint ID
- 93032
- Resolver ID
- CaltechAUTHORS:20190221-110515783
- NASA/JPL/Caltech
- Created
-
2019-03-05Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 4852