Vorticity generation at second order in cosmological perturbation theory

被引：40

作者：

Christopherson, Adam J. ^{[1
]}

Malik, Karim A. ^{[1
]}

Matravers, David R. ^{[2
]}

机构：

[1] Queen Mary Univ London, Astron Unit, Sch Math Sci, London E1 4NS, England

[2] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 12期

关键词：

DENSITY PERTURBATIONS; MAGNETIC-FIELDS;

D O I：

10.1103/PhysRevD.79.123523

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that at second order in cosmological perturbation theory vorticity generation is sourced by entropy gradients. This is an extension of Crocco's theorem to a cosmological setting.

引用

页数：4

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