Dissipative dark matter and the Andromeda plane of satellites

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Dissipative dark matter and the Andromeda plane of satellites

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Title: Dissipative dark matter and the Andromeda plane of satellites
Author: Randall, Lisa; Scholtz, Jakub

Note: Order does not necessarily reflect citation order of authors.

Citation: Randall, Lisa, and Jakub Scholtz. 2015. “Dissipative Dark Matter and the Andromeda Plane of Satellites.” Journal of Cosmology and Astroparticle Physics 2015 (09) (September 24): 057–057. doi:10.1088/1475-7516/2015/09/057.
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Abstract: We show that dissipative dark matter can potentially explain the large observed mass to light ratio of the dwarf satellite galaxies that have been observed in the recently identified planar structure around Andromeda, which are thought to result from tidal forces during a galaxy merger. Whereas dwarf galaxies created from ordinary disks would be dark matter poor, dark matter inside the galactic plane not only provides a source of dark matter, but one that is more readily bound due to the dark matter’s lower velocity. This initial N-body study shows that with a thin disk of dark matter inside the baryonic disk, mass-to-light ratios as high as O(30) can be generated when tidal forces pull out patches of sizes similar to the scales of Toomre instabilities of the dark disk. A full simulation will be needed to confirm this result.
Published Version: doi:10.1088/1475-7516/2015/09/057
Other Sources: https://arxiv.org/abs/1412.1839
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:28265549
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