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A technique for using radio jets as extended gravitational lensing probesA new and potentially powerful method of measuring the mass of a galaxy (or dark matter concentration) which lies close in position to a background polarized radio jet is proposed. Using the fact that the polarization angle is not changed by lensing, an 'alignment-breaking parameter' is defined which is a sensitive indicator of gravitational distortion. The method remains sensitive over a wide redshift range of the gravitational lens. This technique is applied to the analysis of polarimetric observations of the jet of 3C 9 at z = 2.012, combined with a newly discovered 20.3 mag foreground galaxy at z = 0.2538 to 'weigh' the galaxy and obtain an approximate upper limit to the mass-to-light ratio.
Document ID
19910037167
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kronberg, Philipp P.
(Toronto Univ. Ontario Canada)
Dyer, Charles C.
(Toronto, University Canada)
Burbidge, E. Margaret
(Toronto Univ. Ontario Canada)
Junkkarinen, Vesa T.
(California, University La Jolla, United States)
Date Acquired
August 15, 2013
Publication Date
January 20, 1991
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 367
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
91A21790
Funding Number(s)
CONTRACT_GRANT: NAS5-29293
Distribution Limits
Public
Copyright
Other

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