Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Diemand, J."'
We perform direct large molecular dynamics simulations of homogeneous SPC/E water nucleation, using up to $\sim 4\cdot 10^6$ molecules. Our large system sizes allow us to measure extremely low and accurate nucleation rates, down to $\sim 10^{19}\,\te
Externí odkaz:
http://arxiv.org/abs/1507.07335
Publikováno v:
JCAP 1002:030,2010
The velocity distribution function of dark matter particles is expected to show significant departures from a Maxwell-Boltzmann distribution. This can have profound effects on the predicted dark matter - nucleon scattering rates in direct detection e
Externí odkaz:
http://arxiv.org/abs/0912.2358
Our recently completed one billion particle Via Lactea II simulation of a Milky Way-sized dark matter halo resolves over 50,000 gravitationally bound clumps orbiting today within the virialized region of the main host. About 2,300 of these subhalos h
Externí odkaz:
http://arxiv.org/abs/0810.3712
Publikováno v:
J.Phys.Conf.Ser.125:012008,2008
It is a clear unique prediction of the cold dark matter paradigm of cosmological structure formation that galaxies form hierarchically and are embedded in massive, extended dark halos teeming with self-bound substructure or "subhalos". The amount and
Externí odkaz:
http://arxiv.org/abs/0810.3614
Publikováno v:
Nature 454:735-738,2008
In cold dark matter cosmological models, structures form and grow by merging of smaller units. Numerical simulations have shown that such merging is incomplete; the inner cores of halos survive and orbit as "subhalos" within their hosts. Here we repo
Externí odkaz:
http://arxiv.org/abs/0805.1244
Autor:
Diemand, J., Kuhlen, M.
Publikováno v:
2008, ApJL, 680, L25
We show that most particle and subhalo orbits in simulated cosmological cold dark matter halos are surprisingly regular and periodic: The phase space structure of the outer halo regions shares some of the properties of the classical self-similar seco
Externí odkaz:
http://arxiv.org/abs/0804.4185
We present a study of the shapes, orientations, and alignments of Galactic dark matter subhalos in the ``Via Lactea'' simulation of a Milky Way-size LCDM host halo. Whereas isolated dark matter halos tend to be prolate, subhalos are predominantly tri
Externí odkaz:
http://arxiv.org/abs/0705.2037
Autor:
Evrard, A. E., Bialek, J., Busha, M., White, M., Habib, S., Heitmann, K., Warren, M., Rasia, E., Tormen, G., Moscardini, L., Power, C., Jenkins, A. R., Gao, L., Frenk, C. S., Springel, V., White, S. D. M., Diemand, J.
Publikováno v:
Astrophys.J.672:122-137,2008
We present a precise estimate of the bulk virial scaling relation of halos formed via hierarchical clustering in an ensemble of simulated cold dark matter cosmologies. The result is insensitive to cosmological parameters, the presence of a trace, dis
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702241
Autor:
Faltenbacher, A., Diemand, J.
Publikováno v:
Mon.Not.Roy.Astron.Soc.369:1698-1702,2006
We employ a high-resolution dissipationless N-body simulation of a galaxy cluster to investigate the impact of subhalo selection on the resulting velocity distributions. Applying a lower limit on the present bound mass of subhalos leads to high subha
Externí odkaz:
http://arxiv.org/abs/astro-ph/0602197
We show the instability of two self-tuning brane world models with gauge invariant linear perturbation theory. This general method confirms a known instability of the original model with vanishing bulk potential. We also show the dynamical instabilit
Externí odkaz:
http://arxiv.org/abs/hep-th/0105240