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The Distribution of Dark Mass in Galaxies

Techniques, Puzzles, and Implications for Lensing

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Astrophysical Applications of Gravitational Lensing

Part of the book series: International Astronomical Union / Union Astronomique Internationale ((IAUS,volume 173))

Abstract

Gravitational lensing is one of a number of methods used to probe the distribution of dark mass in the Universe. On galactic scales, complementary techniques include the use of stellar kinematics, the kinematics and morphology of the neutral gas layer, kinematics of satellites, and the morphology and temperature profile of X-ray halos. These methods are compared, with emphasis on their relative strengths and weaknesses in constraining the distribution and extent of dark matter in the Milky Way and other galaxies. It is concluded that (1) the extent of dark halos remains ill-constrained, (2) halos need not be isothermal, and (3) the dark mass is probably quite flattened.

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© 1996 International Astronomical Union

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Sackett, P.D. (1996). The Distribution of Dark Mass in Galaxies. In: Kochanek, C.S., Hewitt, J.N. (eds) Astrophysical Applications of Gravitational Lensing. International Astronomical Union / Union Astronomique Internationale, vol 173. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0221-3_45

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  • DOI: https://doi.org/10.1007/978-94-009-0221-3_45

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-3955-7

  • Online ISBN: 978-94-009-0221-3

  • eBook Packages: Springer Book Archive

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