Effects of primordial magnetic field on the formation rate of dark matter halos

被引：4

作者：

Cheera, Varalakshmi ^{[1
]}

Nigam, Rahul ^{[1
]}

机构：

[1] BITS Pilani, Hyderabad Campus, Hyderabad, Andhra Pradesh, India

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2018年 / 363卷 / 05期

关键词：

Magnetic field; Dark matter halo; EXPANDING UNIVERSE; GALAXIES; CLUSTERS; HISTORY;

D O I：

10.1007/s10509-018-3316-z

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We construct and demonstrate a method for computing the formation rate of the dark matter halo in the hierarchical model set up. This method uses the Press-Schecter distribution for the halos and hence applies only to the spherical halos. But this can be generalized to ellipsoidal structures also if one uses the Sheth-Torman distribution. After obtaining the formation rate, we study the effect of primordial magnetic field on the dynamics of these halos. We investigate the effect for different field strengths and conclude that a magnetic field stronger than 10 nG would impact the halos larger than 10(8) solar masses while a weaker field affects the formation rate of smaller halos.

引用

页数：6

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