CONSTRAINING PRIMORDIAL MAGNETIC FIELDS THROUGH LARGE-SCALE STRUCTURE

被引：39

作者：

Kahniashvili, Tina ^{[1
,2
,3
,4
]}

Maravin, Yurii ^{[5
]}

Natarajan, Aravind ^{[1
]}

Battaglia, Nicholas ^{[1
]}

Tevzadze, Alexander G. ^{[6
]}

机构：

[1] Carnegie Mellon Univ, McWilliams Ctr Cosmol, Pittsburgh, PA 15213 USA

[2] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

[3] Laurentian Univ, Dept Phys, Sudbury, ON P3E 2C6, Canada

[4] Ilia State Univ, Abastumani Astrophys Observ, GE-0194 Tbilisi, Georgia

[5] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA

[6] Javakhishvili Tbilisi State Univ, Fac Exact & Nat Sci, GE-0128 Tbilisi, Georgia

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 770卷 / 01期

基金：

美国国家科学基金会; 瑞士国家科学基金会;

关键词：

large-scale structure of universe; primordial nucleosynthesis; MICROWAVE BACKGROUND ANISOTROPIES; ZELDOVICH POWER SPECTRUM; LY-ALPHA FOREST; SUNYAEV-ZELDOVICH; COSMOLOGICAL PARAMETERS; CLUSTER PHYSICS; MASS FUNCTION; LYMAN-ALPHA; X-RAY; POLARIZATION;

D O I：

10.1088/0004-637X/770/1/47

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study primordial magnetic field effects on the matter perturbations in the universe. We assume magnetic field generation prior to the big bang nucleosynthesis (BBN), i.e., during the radiation-dominated epoch of the universe expansion, but do not limit analysis by considering a particular magnetogenesis scenario. Contrary to previous studies, we limit the total magnetic field energy density and not the smoothed amplitude of the magnetic field at large (of the order of 1 Mpc) scales. We review several cosmological signatures, such as halo abundance, thermal Sunyaev-Zel'dovich effect, and Ly alpha data. For a cross-check, we compare our limits with that obtained through the cosmic microwave background faraday rotation effect and BBN. The limits range between 1.5 nG and 4.5 nG for n(B) is an element of (-3; -1.5).

引用

页数：7

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