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Possible conversion of a neutron star to a quark star in the presence of high magnetic field
Article first published online: 19 APR 2011
DOI: 10.1111/j.1365-2966.2011.18586.x
© 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS
Issue
Monthly Notices of the Royal Astronomical Society
Volume 414, Issue 3, pages 2702–2708, July 2011
Additional Information
How to Cite
Mallick, R. and Sinha, M. (2011), Possible conversion of a neutron star to a quark star in the presence of high magnetic field. Monthly Notices of the Royal Astronomical Society, 414: 2702–2708. doi: 10.1111/j.1365-2966.2011.18586.x
Publication History
- Issue published online: 21 JUN 2011
- Article first published online: 19 APR 2011
- Accepted 2011 February 22. Received 2011 February 17; in original form 2011 January 10
Vol. 415, Issue 4, 3968, Article first published online: 6 JUL 2011
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Keywords:
- equation of state;
- gravitation;
- hydrodynamics;
- shock waves;
- stars: magnetic field;
- stars: neutron
ABSTRACT
Recent results and data suggest that high magnetic fields in neutron stars (NS) strongly affect the characteristics (radius, mass) of the star. Such stars are even separated into a class known as magnetars, for which the surface magnetic field is greater than 1014 G. In this work we discuss the effect of such a high magnetic field on the phase transition of a NS to a quark star (QS). We study the effect of magnetic field on the transition from NS to QS including the magnetic-field effect in the equation of state (EoS). The inclusion of the magnetic field increases the range of baryon number densities for which the flow velocities of the matter in the respective phase are finite. The magnetic field helps in initiation of the conversion process. The velocity of the conversion front, however, decreases due to the presence of the magnetic field, as the presence of the magnetic field reduces the effective pressure (P). The magnetic field of the star is decreased by the conversion process, and the resultant QS has lower magnetic field than the initial NS.