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Galaxy-Galaxy Lensing: Status & Applications

Published online by Cambridge University Press:  26 May 2016

Tereasa G. Brainerd
Tereasa G. Brainerd*
Affiliation:
Boston University, Department of Astronomy, 725 Commonwealth Avenue, Boston, MA 02215, USA

Abstract

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There are now 10 independent observational investigations which have detected systematic weak gravitational lensing of background field galaxies by foreground field galaxies. This effect, known as galaxy-galaxy lensing, results in a very slight (of order 1%) distortion to the intrinsic image shapes of the lensed galaxies. Although small, the galaxy-galaxy lensing signal is coherent about the lens centers and is, therefore, detectable in large data sets via an ensemble average over many candidate pairs of lenses and sources. Here I summarize the results of the recent detections of galaxy-galaxy lensing and discuss some applications that are likely to be implemented in the very near future.

Type
Part VIII: Dark Matter and Ω0
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 282 - 291
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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