| Texto completo | |
| Autor(es): |
de Souza, Rafael S.
;
Opher, Reuven
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 81, n. 6, p. 4-pg., 2010-03-15. |
| Resumo | |
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. (AU) | |
| Processo FAPESP: | 00/06770-2 - Radiação cósmica de fundo em microondas e formação de estruturas no universo |
| Beneficiário: | Reuven Opher |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 09/05176-4 - Análise da influência de campos magnéticos e matéria escura na formação e evolução de galáxias |
| Beneficiário: | Rafael da Silva de Souza |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |