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Limits On The Core Radii Of JVAS/CLASS Gravitational Lenses

Published online by Cambridge University Press:  26 May 2016

M. Norbury ,
N. J. Jackson ,
I. W. A. Browne ,
P. N. Wilkinson  and
D. Rusin
M. Norbury
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
N. J. Jackson
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
I. W. A. Browne
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
P. N. Wilkinson
Affiliation:
University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK
D. Rusin
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104, USA

Abstract

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Gravitational lenses typically consist of either two or four images (doubles and quads) of the background source. However, it has been shown that gravitational lensing by transparent extended matter distributions should produce an odd number of images. An upper limit for the flux of the missing ‘odd image’ can be obtained using high sensitivity radio observations, such as 5GHz MERLIN (Multi-Element Radio Linked Interferometer Network) data. Limits on the ‘odd image’ flux can then be converted into an upper limit on the core radius of the lensing galaxy.

Type
Part XII: Poster Papers
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 492 - 493
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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