Results 51 to 60 of about 33,866 (165)
Why Artificial Disruption Is Not a Concern for Current Cosmological Simulations
The Astrophysical JournalRecent studies suggest that cold dark matter subhalos are hard to disrupt and almost all cases of subhalo disruption observed in numerical simulations are due to numerical effects.
Feihong He, Jiaxin Han, Zhaozhou Li
doaj +1 more source
Dark Matter Halos within Clusters
, 1998 We examine the properties of dark matter halos within a rich galaxy cluster using a high resolution simulation that captures the cosmological context of a cold dark matter universe.
Ghigna, Sebastiano +5 more
core +2 more sources
Signatures of dark matter halo expansion in galaxy populations [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Dark matter cores within galaxy haloes can be formed by energy feedback from star forming regions: an energy balance suggests that the maximum core formation efficiency arises in galaxies with M$_{\star}\sim10^{8.5}$M$_{\odot}$. We show that a model population of galaxies, in which the density profile has been modified by such baryonic feedback, is ...
Brook, Chris B., Di Cintio, Arianna
openaire +4 more sources
Out There No One Has a Right to Die
Bioethics, EarlyView.ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley +1 more source
Velocity bias in a LCDM model [PDF]
, 1999 We use N-body simulations to study the velocity bias of dark matter halos, the difference in the velocity fields of dark matter and halos, in a flat low- density LCDM model.
Cole S. +3 more
core +2 more sources
Dark Matter at the Center and in the Halo of the Galaxy [PDF]
, 2004 All presently known stellar-dynamical constraints on the size and mass of the supermassive compact dark object at the Galactic center are consistent with a ball of self-gravitating, nearly non-interacting, degenerate fermions with mass between 76 and 491 keV, for degeneracy factor g=2. Sterile neutrinos of 76 keV mass, which are mixed with at least one
Bilic, Neven +2 more
openaire +2 more sources
How do galaxies populate dark matter haloes? [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 11 pages, 7 figures; revisions to both text and figures; matches version submitted to ...
Guo, Q. +3 more
openaire +3 more sources
DiskScissors: Cutting Arbitrary‐Topology Solids for Bijective Mapping
Computer Graphics Forum, EarlyView.Abstract An algorithm for cutting solid objects in a topology‐controlled manner is presented. Concretely, given a loop on the object boundary, a disk‐topology cut surface bounded by the loop is constructed in the interior. In contrast to various previous approaches, both disk topology and conformance to the prescribed loop are ensured by construction ...
S. Hinderink, M. Campen
wiley +1 more source
Halo Properties from Observable Measures of Environment: I. Halo and Subhalo Masses
The Open Journal of Astrophysics, 2023 The stellar mass - halo mass relation provides a strong basis for connecting galaxies to their host dark matter halos in both simulations and observations.
Haley Bowden +2 more
doaj +1 more source
, 2006 We have recently shown that the 3-parameter density-profile model from Prugniel & Simien provides a better fit to simulated, galaxy- and cluster-sized, dark matter halos than an NFW-like model with arbitrary inner profile slope gamma (Paper I).
Alister W. Graham +20 more
core +1 more source