Zobrazeno 1 - 10
of 825
pro vyhledávání: '"Kuhlen, M."'
Autor:
Kuhlen, M., Faucher-Giguere, C. -A.
Recent observations have constrained the galaxy UV luminosity function up to z~10. However, these observations alone allow for a wide range of reionization scenarios due to uncertainties in the abundance of faint galaxies and the escape fraction of i
Externí odkaz:
http://arxiv.org/abs/1201.0757
We describe cosmological galaxy formation simulations with the adaptive mesh refinement code Enzo that incorporate a star formation prescription regulated by the local abundance of molecular hydrogen. We show that this H2-regulated prescription leads
Externí odkaz:
http://arxiv.org/abs/1105.2376
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
Publikováno v:
Science 325:970-973,2009
The unambiguous detection of Galactic dark matter annihilation would unravel one of the most outstanding puzzles in particle physics and cosmology. Recent observations have motivated models in which the annihilation rate is boosted by the Sommerfeld
Externí odkaz:
http://arxiv.org/abs/0907.0005
Autor:
Zakamska, N. L., Schulz, A. E., Heng, K., Juric, M., Kocsis, B., Kuhlen, M., Mandelbaum, R., Mitchell, J. L., Pan, M., Rudd, D. H., van de Ven, G., Zheng, Z.
In order to attract and retain excellent researchers and diverse individuals in astrophysics, we recommend action be taken in several key areas impacting young scientists: (1) Maintain balance between large collaborations and individual projects thro
Externí odkaz:
http://arxiv.org/abs/0905.1986
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