Generation of large scale magnetic fields at recombination epoch

被引：53

作者：

Berezhiani, Z ^{[1
]}

Dolgov, AD

机构：

[1] Univ Aquila, Dipartimento Fis, I-67010 Coppito, Laquila, Italy

[2] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Laquila, Italy

[3] Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

[4] ITEP, Moscow 113259, Russia

来源：

ASTROPARTICLE PHYSICS | 2004年 / 21卷 / 01期

关键词：

galactic and intergalactic magnetic fields; density perturbation;

D O I：

10.1016/j.astropartphys.2003.11.002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is argued that large scale cosmic magnetic field could be generated in the primeval plasma slightly before hydrogen recombination. Non-zero vorticity, necessary for that, might be created by the photon diffusion in the second order in the temperature fluctuations. The resulting seed fields at galactic scale would be (8-9) orders of magnitude smaller than the observed ones and with a reasonable galactic dynamo amplifying the seed fields by the factor similar to10(8)-10(9) an existence of coherent magnetic fields in galaxies may be explained. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：59 / 69

页数：11

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