| Full text | |
| Author(s): |
de Souza, Rafael S.
;
Opher, Reuven
Total Authors: 2
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW D; v. 81, n. 6, p. 4-pg., 2010-03-15. |
| Abstract | |
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) | |
| FAPESP's process: | 00/06770-2 - The cosmic microwave background radiation (CMBR) and structure formation in the universe |
| Grantee: | Reuven Opher |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 09/05176-4 - Analysis of the influence of magnetic fields and cold dark matter in the formation and evolution of galaxies |
| Grantee: | Rafael da Silva de Souza |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |