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Gravitational Optics Studies of Dark Matter Halos

Brainerd, Tereasa G. and Blandford, Roger D. (2002) Gravitational Optics Studies of Dark Matter Halos. In: Gravitational Lensing: An Astrophysical Tool. Lecture Notes in Physics. No.608. Springer , Berlin, pp. 96-123. ISBN 978-3-540-44355-1.

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One of the best methods that we have for exploring the distribution of dark matter throughout the universe is to measure its gravitational influence on the observed shapes of background galaxies. On linear scales of ∼ 3 – 300 kpc, when the dark matter distribution is dominated by individual galaxy halos, the investigation is best performed statistically by correlating the orientations of the source galaxies with the position angles of the foreground lens galaxies. Recent observational programs have shown that the large-scale mass to light ratio in red bandpasses is ∼ 100 solar units, and is apparently independent of galaxy type. The prospects for improving the precision of these measurements and for extending them to larger length scales over the next five years are good.

Item Type:Book Section
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Blandford, Roger D.0000-0002-1854-5506
Additional Information:© 2002 Springer-Verlag Berlin Heidelberg. First Online: 03 December 2002. We wish to thank Frederic Courbin, Dante Minniti, and Hernan Quintana for their hospitality and patience. Support by the US National Science Foundation under grants AST-9616968 (TGB) and AST-9900866 (RDB) is gratefully acknowledged.
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Subject Keywords:Dark Matter; Position Angle; Cluster Galaxy; Dark Matter Halo; Dark Halo
Series Name:Lecture Notes in Physics
Issue or Number:608
Record Number:CaltechAUTHORS:20190607-151832158
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96216
Deposited By: Tony Diaz
Deposited On:08 Jun 2019 18:00
Last Modified:16 Nov 2021 17:19

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