Relation Between Initial Cosmological Conditions and the Properties of Dark Matter Haloes

15th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Semenov, Vadim^1,2

Astro Space Center of Lebedev Physical Institute of Russian Academy of Sciences, Profsojuznaja st. 84/32, 117997 Moscow, Russia^1

Moscow Institute of Physics and Technology, Institutskij per. 9, 141700 Dolgoprudny, Russia^2

关键词: Dark matter;    Dark matter particles;    Entropy theory;    Initial perturbation;    Large scale structures;    Velocity dispersion;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/461/1/012008/pdf
DOI  :  10.1088/1742-6596/461/1/012008

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The core-cusp problem is one of the essential issues in modern cosmology. The Entropy Theory of haloes Evolution recently suggested by Lukash, Doroshkevich and Mikheeva is one of the possible solutions to this problem. This work compares some results of numerical simulation of Large-Scale Structure with the conclusions of the Entropy Theory in order to verify this theory. The numerical simulation was performed in a volume 100 Mpc/h in a side using ∼ 17 million particles. Dark matter particles, which then form virialized haloes, were found in the initial perturbation field. This work investigates the distribution of these dark matter particles and measures the velocity dispersion profiles. It also traces evolution of haloes entropy profiles. On the whole, simulation results correspond to Entropy Theory of haloes evolution.