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The influence of strong magnetic fields on proto-quark stars | | V. Dexheimer
; D. P. Menezes
; M. Strickland
; | | Date: |
16 Oct 2012 | | Abstract: | We use the MIT bag model to analyze different stages of magnetized quark star
evolution incorporating baryon number conservation and an anisotropic energy
momentum tensor. The first stages of the evolution are simulated through the
inclusion of trapped neutrinos and fixed entropy per particle, while in the
last stage the star is taken to be deleptonized and cold. We find that,
although strong magnetic fields allow for more massive quark stars, the
evolution of isolated stars needs to be constrained by fixed baryon number,
which lowers the star masses. Moreover, magnetic field effects, measured by the
difference between the parallel and perpendicular pressures, are more
pronounced in the beginning of the star evolution when there is a larger number
of charged leptons and up quarks. We also show that having a spatially varying
magnetic field allows for larger magnetic fields to be supported since the
model employed generates large magnetic fields only at high densities, where
the longitudinal matter pressure is large enough to partially compensate for
the negative magnetic field longitudinal pressure. | | Source: | arXiv, 1210.4526 | | Services: | Forum | Review | PDF | Favorites | |
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