Quark-hadron phase transition in a neutron star under strong magnetic fields

被引：74
|
作者：
Rabhi, A. [1 ,2 ]
Pais, H. [1 ]
Panda, P. K. [1 ,3 ]
Providencia, C. [1 ]
机构：
[1] Univ Coimbra, Dept Phys, Ctr Fis Computac, P-3004516 Coimbra, Portugal
[2] Fac Sci Tunis, Phys Mat Condensee Lab, Tunis 1060, Tunisia
[3] Indian Assoc Cultivat Sci, Kolkata 700032, India
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2009年 / 36卷 / 11期
关键词：
GAMMA-RAY BURSTS; MILLISECOND PULSARS; MIXED-PHASE; MATTER; NUCLEATION; CORES;
D O I：
10.1088/0954-3899/36/11/115204
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We study the effect of a strong magnetic field on the properties of neutron stars with a quark-hadron phase transition. It is shown that the magnetic field prevents the appearance of a quark phase, enhances the leptonic fraction, decreases the baryonic density extension of the mixed phase and stiffens the total equation of state, including both the stellar matter and the magnetic field contributions. Two parametrizations of a density-dependent static magnetic field, increasing, respectively, fast and slowly with the density and reaching 2-4 x 10(18) G in the centre of the star, are considered. The compact stars with strong magnetic fields have maximum mass configurations with larger masses and radii and smaller quark fractions. The parametrization of the magnetic field with density has a strong influence on the star properties.
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收藏
页数：17
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