期刊
PHYSICAL REVIEW D
卷 81, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.81.067301
关键词
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资金
- FAPESP [2009/05176-4, 00/06770-2]
- Brazilian agency CNPq [300414/82-0]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [00/06770-2] Funding Source: FAPESP
Microgauss magnetic fields are observed in all galaxies at low and high redshifts. The origin of these intense magnetic fields is a challenging question in astrophysics. We show here that the natural plasma fluctuations in the primordial Universe (assumed to be random), predicted by the fluctuation - dissipation theorem, predicts similar to 0.034 mu G fields over similar to 0.3 kpc regions in galaxies. If the dipole magnetic fields predicted by the fluctuation- dissipation theorem are not completely random, microgauss fields over regions greater than or similar to 0.34 kpc are easily obtained. The model is thus a strong candidate for resolving the problem of the origin of magnetic fields in less than or similar to 10(9) years in high redshift galaxies.
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