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arXiv · 1305.0308

Gravitational collapse of a magnetized fermion gas with finite temperature

I. Delgado Gaspar·A. Perez Martinez·Roberto A. Sussman·A. Ulacia Rey
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Abstract

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 $\hbox{T}\sim 10^{7}\hbox{K}$.

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I. Delgado Gaspar, A. Perez Martinez, Roberto A. Sussman, A. Ulacia Rey. 2013-05-01. Gravitational collapse of a magnetized fermion gas with finite temperature. https://doi.org/10.1140/epjc%2Fs10052-013-2502-y

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