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
收藏
页数：4
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