Journal article
Simulating Voids
The Astrophysical journal, v 605(1 I), pp 1-6
09 Jul 2003
Abstract
Astrophys.J.605:1-6,2004 We present a novel method for simulation of the interior of large cosmic
voids, suitable for study of the formation and evolution of objects lying
within such regions. Following Birkhoff's theorem, void regions dynamically
evolve as universes with cosmological parameters that depend on the
underdensity of the void. We derive the values of $\Omega_M$,
$\Omega_{\Lambda}$, and $H_0$ that describe this evolution. We examine how the
growth rate of structure and scale factor in a void differ from the background
universe. Together with a prescription for the power spectrum of fluctuations,
these equations provide the initial conditions for running specialized void
simulations. The increased efficiency of such simulations, in comparison with
general-purpose simulations, allows an improvement of upwards of twenty in the
mass resolution. As a sanity check, we run a moderate resolution simulation
($N=128^3$ particles) and confirm that the resulting mass function of void
halos is consistent with other theoretical and numerical models.
Metrics
Details
- Title
- Simulating Voids
- Creators
- David M Goldberg - DrexelMichael S Vogeley - Drexel
- Publication Details
- The Astrophysical journal, v 605(1 I), pp 1-6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000220801700001
- Scopus ID
- 2-s2.0-2542619202
- Other Identifier
- 991019169423604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Astronomy & Astrophysics