Column density profiles of multiphase gaseous haloes

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evolution of the density profiles of dark matter haloes

We use numerical simulations in a ΛCDM cosmology to model density profiles in a set of sixteen dark matter haloes with resolutions of up to seven million particles within the virial radius. These simulations allow us to follow robustly the formation and evolution of the central cusp over a large mass range of 10 to 10 M⊙, down to approximately 0.5% of the virial radius, and from redshift 5 to t...

متن کامل

Circular velocity profiles of dark matter haloes

We use a high-resolution simulation of a galaxy-sized dark matter halo, published simulated data as well as four cluster-sized haloes from Fukushige, Kawai & Makino (2003) to study the inner halo structure in a ΛCDM cosmology. We find that the circular velocity curves are substantially better described by SWTS profiles (Stoehr et al. 2002) than by NFW (Navarro, Frenk & White 1997) or Moore et a...

متن کامل

Density profiles of dark matter haloes on Galactic and Cluster scales

In the present paper, we improve the “Extended Secondary Infall Model” (ESIM) of Williams et al. (2004) to obtain further insights on the cusp/core problem. The model takes into account the effect of ordered and random angular momentum, dynamical friction and baryon adiabatic contraction in order to obtain a secondary infall model more close to the collapse reality. The model is applied to stru...

متن کامل

Dark matter haloes: an additional criterion for the choice of fitting density profiles

Simulated dark matter haloes are fitted by self-similar, universal density profiles, where the scaled parameters depend only on a scaled (truncation) radius, Ξ = R/r0, which, in turn, is supposed to be independent on the mass and the formation redshift. The further assumption of a lognormal distribution (for a selected mass bin) of the scaled radius, or concentration, in agreement with the data...

متن کامل

A necessary condition for best fitting analytical to simulated density profiles in dark matter haloes

Analytical and geometrical properties of generalized power-law (GPL) density profiles are reviewed, and special effort is devoted to the special cases where GPL density profiles reduce to (i) a double power-law (DPL), and (ii) a single power-law (SPL). Then GPL density profiles are compared with simulated dark haloes (SDH) density profiles, and nonlinear least-squares fits are prescribed, invol...

متن کامل

ذخیره 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: 2016

ISSN: 0035-8711,1365-2966

DOI: 10.1093/mnras/stw375