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The European Physical Journal A

, Volume 45, Issue 1, pp 99–110 | Cite as

On the crustal matter of magnetars

  • Nandini Nag
  • Sutapa Ghosh
  • Somenath Chakrabarty
Regular Article - Theoretical Physics

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 the Thomas-Fermi (TF) model is used in the presence of a 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 at the inner crust, have been observed.

Keywords

Neutron Star Free Neutron Kinetic Pressure Crust Region Crust Matter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Nandini Nag
    • 1
  • Sutapa Ghosh
    • 1
  • Somenath Chakrabarty
    • 1
  1. 1.Department of Physics, Visva-BharatiSantiniketanIndia

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