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Unbound particles in dark matter halos [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Science, 2013.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
pages 019-019 : digital, PDF file
Additional Creators
United States. Department of Energy. Office of Science and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We investigate unbound dark matter particles in halos by tracing particle trajectories in a simulation run to the far future (a = 100). We find that the traditional sum of kinetic and potential energies is a very poor predictor of which dark matter particles will eventually become unbound from halos. We also study the mass fraction of unbound particles, which increases strongly towards the edges of halos, and decreases significantly at higher redshifts. We discuss implications for dark matter detection experiments, precision calibrations of the halo mass function, the use of baryon fractions to constrain dark energy, and searches for intergalactic supernovae.
Report Numbers
E 1.99:slac-pub--15442
slac-pub--15442
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Note
Published through SciTech Connect.
06/13/2013.
"slac-pub--15442"
"arXiv:1208.0334"
Journal of Cosmology and Astroparticle Physics 2013 06 ISSN 1475-7516 FT
Behroozi, Peter; Loeb, Abraham; Wechsler, Risa.
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Funding Information
AC02-76SF00515
View MARC record | catkey: 23495726