Void scaling and void profiles in cold dark matter models
نویسندگان
چکیده
منابع مشابه
Void Scaling and Void Profiles in CDM Models
Received ABSTRACT An analysis of voids using cosmological N-body simulations of cold dark matter (CDM) models is presented. It employs a robust statistics of voids, that was recently applied to discriminate between data from the Las Campanas Redshift Survey (LCRS) and different cosmological models. Here we extend the analysis to 3D and show that typical void sizes D in the simulated galaxy samp...
متن کاملCold Dark Matter Models
Motivated by inflation, the theory of big-bang nucleosynthesis and the quest for a deeper understanding of the fundamental forces and particles, a very successful paradigm for the development of structure in the Universe has evolved. It holds that most of the matter exists in the form of slowly moving elementary particles left over from the earliest moments (cold dark matter or CDM) and that th...
متن کاملOpen cold dark matter models
Motivated by recent developments in inflationary cosmology indicating the possibility of obtaining genuinely open universes in some models, we compare the predictions of cold dark matter (CDM) models in open universes with a variety of observational information. The spectrum of the primordial curvature perturbation is taken to be scale invariant (spectral index n = 1), corresponding to a flat i...
متن کاملDistances and lensing in cosmological void models
We study the distances and gravitational lensing in spherically symmetric inhomogeneous cosmological models consisting of inner and outer homogeneous regions which are connected by a single shell or double shells at the redshift z1 ∼ 0.067. The density and Hubble parameters in the inner region are assumed to be smaller and larger, respectively, than those in the outer region. It is found that a...
متن کاملBulk Motions in Large-Scale Void Models
To explain the puzzling situation in the observed bulk flows on scales ∼ 150h Mpc (H0 = 100h −1 km sec Mpc), we consider the observational behavior of spherically symmetric inhomogeneous cosmological models, which consist of inner and outer homogeneous regions connected by a shell or an intermediate self-similar region. It is assumed that the present matter density parameter in the inner region...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2002
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2002.05296.x