Comment on "Can there be a quark-matter core in a magnetar?"

Details Comment on "Can there be a quark-matter core in a magnetar?" Comment on "Can there be a quark-matter core in a magnetar?"

2001-10-02

arxiv.org/abs/astro-ph/0110069v1

Astronomy and Astrophysics

Astrophysics

To appear in Phys. Rev. D Comments

Scientific paper

We comment on the paper by Tanusri Ghosh and Somenath Chakrabarty, Phys. Rev. D63, 043006 (2001). In that paper it was argued that a first-order transition to quark matter in the core of a magnetar is absolutely forbidden if its magnetic field strength exceeds $10^{15}$ G. However, we show in this comment that if the quark anomalous magnetic moment and the population of higher Landau levels is taken into account, it may still be possible for a first-order phase transition from nuclear matter to quark matter to occur in the core of a magnetar. These effects may also obscure the question of whether beta equilibrium favors strange quark matter in the core of a magnetar.

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