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Alternatives to Dark Matter (?)

Published online by Cambridge University Press:  26 May 2016

Anthony Aguirre
Anthony Aguirre*
Affiliation:
Department of Physics/SCIPP, UC Santa Cruz, 1156 High St. Santa Cruz, CA 95064; aguirre@scipp.ucsc.edu

Abstract

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It has long been known that Newtonian dynamics applied to the visible matter in galaxies and clusters does not correctly describe the dynamics of those systems. While this is generally taken as evidence for dark matter it is in principle possible that instead Newtonian dynamics (and with it General Relativity) breaks down in these systems. Indeed there have been a number of proposals as to how standard gravitational dynamics might be modified so as to correctly explain galactic dynamics without dark matter. I will review this general idea (but focus on “MOdified Newtonian Dynamics”, or “MOND”), and discuss a number of ways alternatives to dark matter can be tested and, in many cases, ruled out.

Type
Part 2: Introduction to Dark Matter in Galaxies
Information
Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 17 - 26
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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