On the Crustal Matter of Magnetars
Abstract
We have investigated some of the properties of dense sub-nuclear matter at the crustal region (both the outer crust and the inner crust region) of a magnetar. The relativistic version of Thomas-Fermi (TF) model is used in presence of strong quantizing magnetic field for the outer crust matter. The compressed matter in the outer crust, which is a crystal of metallic iron, is replaced by a regular array of spherically symmetric Wigner-Seitz (WS) cells. In the inner crust region, a mixture of iron and heavier neutron rich nuclei along with electrons and free neutrons has been considered. Conventional Harrison-Wheeler (HW) and Bethe-Baym-Pethick (BBP) equation of states are used for the nuclear mass formula. A lot of significant changes in the characteristic properties of dense crustal matter, both at the outer crust and the inner crust, have been observed.
Keywords
Cite
@article{arxiv.0909.1173,
title = {On the Crustal Matter of Magnetars},
author = {Nandini Nag and Somenath Chakrabarty},
journal= {arXiv preprint arXiv:0909.1173},
year = {2014}
}
Comments
29 pages REVTEX manuscript, 15 .eps figures (included)