The magnetic structure of neutron stars and their surface-to-core temperature relation

A.Y. Potekhin1,2, V.A. Urpin1, G. Chabrier2
1Department of Theoretical Astrophysics, Ioffe Physico-Technical Institute, 194021 St. Petersburg, Russia
2Ecole Normale Superieure de Lyon (C.R.A.L., UMR CNRS No.\ 5574), 46 allee d'Italie, 69364 Lyon Cedex 07, France

We study the relation between the mean effective surface temperature Ts and the internal temperature Tb for magnetic neutron stars, assuming that the magnetic field near the surface has a small-scale structure. The heavy-element (iron) and light-element (accreted) heat-blanketing envelopes are considered, and the results are compared with the case of a dipole magnetic field. We argue that the difference in the Tb(Ts)-relation for different magnetic configurations is always much smaller than the possible difference caused by variations of the chemical composition in the envelope.

This work is published: Astron. Astrophys. 443, 1025-1028 (2005)

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