Cowsik, Ramanath ; Ghosh, Pranab (1986) Dynamical effects of an extended cloud of Dark Matter on dwarf spheroidals Journal of Astrophysics and Astronomy, 7 (1). pp. 7-15. ISSN 0250-6335
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Official URL: http://www.ias.ac.in/jarch/jaa/7/7-15.pdf
Related URL: http://dx.doi.org/10.1007/BF02715022
Abstract
If the dwarf spheroidals are embedded in an extended cloud of dark matter then their density profiles can be reproduced by assuming a Maxwellian distribution of velocities for the constituent stars. The observed luminosity profiles of dwarf spheroidals imply densities for the dark matter in the range 10-26 to 10-25 g cm-3, and mass-to-luminosity ratios which are typically an order of magnitude greater than those of globular clusters. Neutrinos of mass ~10 eV and <v> ~1000 km s-1 can provide this requisite density for the background.
| Item Type: | Article |
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| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Galaxies; Dark Matter-galaxies; Dwarf Spheroidal-neutrino; Mass |
| ID Code: | 20653 |
| Deposited On: | 20 Nov 2010 13:47 |
| Last Modified: | 17 May 2016 04:56 |
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