Gravitational collapse of a spherical star with heat flow as a possible energy mechanism of gamma-ray bursts
arXiv:0803.3661 · doi:10.1088/0253-6102/50/1/52
Abstract
We investigate the gravitational collapse of a spherically symmetric, inhomogeneous star, which is described by a perfect fluid with heat flow and satisfies the equation of state at its center. In the process of the gravitational collapsing, the energy of the whole star is emitted into space. And the remaining spacetime is a Minkowski one without a remnant at the end of the process. For a star with a solar mass and solar radius, the total energy emitted is at the order of {\rm erg}, and the time-scale of the process is about . These are in the typical values for a gamma-ray burst. Thus, we suggest the gravitational collapse of a spherical star with heat flow as a possible energy mechanism of gamma-ray bursts.
arXiv comment4 pages, 2 figures, to appear in Commun. Theor. Phys
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