THE SURVIVAL OF DARK MATTER HALOS IN THE CLUSTER Cl 0024+16
نویسندگان
چکیده
منابع مشابه
The survival of dark matter halos in the cluster Cl 0024 + 16
Theories of structure formation in a cold dark matter dominated Universe predict that massive clusters of galaxies assemble from the hierarchical merging of lower mass subhalos. Exploiting strong and weak gravitational lensing signals inferred from panoramic Hubble Space Telescope imaging data, we present a high resolution reconstruction of the mass distribution in the massive, lensing cluster ...
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1. I n t r o d u c t i o n Dark matter halos are often modelled as isothermal potential wells whose depth is usually identified with the velocity dispersion of stars in spheroidal galaxies or with the disk rotation speed in spirals. Since velocity dispersion increases with galaxy luminosity, this implies that more massive halos should surround brighter galaxies, a hypothesis that, however, does...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2009
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/693/1/970