Wednesday, September 26, 2012

1209.5611 (Monika Sinha et al.)

Hypernuclear matter in strong magnetic field    [PDF]

Monika Sinha, Banibrata Mukhopadhyay, Armen Sedrakian
Compact stars with strong magnetic fields (magnetars) have been observationally determined to have surface magnetic fields of order of 10^{14}-10^{15} G, the implied internal field strength being several orders larger. We study the equation of state and composition of dense hypernuclear matter in strong magnetic fields in a range expected in the interiors of magnetars. Within the non-linear Boguta-Bodmer-Walecka model we find that the magnetic field has sizable influence on the properties of matter for central magnetic field B \ge 10^{17} G, in particular the matter properties become anisotropic. Moreover, for the central fields B_{\rm cr} \ge 10^{19} G, the magnetized hypernuclear matter becomes unstable, which limits the range of admissible fields in magnetars to fields below the critical value B_{\rm cr}.
View original: http://arxiv.org/abs/1209.5611

No comments:

Post a Comment