Gravitational collapse of a magnetized fermion gas with finite temperature
| Autor: | Gaspar, I. Delgado, Martinez, A. Perez, Sussman, Roberto A., Rey, A. Ulacia |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | European Journal of Physics C, 73, 2502, (2013) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epjc/s10052-013-2502-y |
| Popis: | We examine the dynamics of a self--gravitating magnetized electron gas at finite temperature near the collapsing singularity of a Bianchi-I spacetime. Considering a general and appropriate and physically motivated initial conditions, we transform Einstein--Maxwell field equations into a complete and self--consistent dynamical system amenable for numerical work. The resulting numerical solutions reveal the gas collapsing into both, isotropic ("point-like") and anisotropic ("cigar-like") singularities, depending on the initial intensity of the magnetic field. We provide a thorough study of the near collapse behavior and interplay of all relevant state and kinematic variables: temperature, expansion scalar, shear scalar, magnetic field, magnetization and energy density. A significant qualitative difference in the behavior of the gas emerges in the temperature range $\hbox{T} sim10^{4}\hbox{K}$ and $\hbox{T}\sim 10^{7}\hbox{K}$. Comment: 9 pages, 7 figures. arXiv admin note: substantial text overlap with arXiv:1211.5980 |
| Databáze: | arXiv |
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