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NAM2012 - All Presentation Details

Record 270 of 756

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Magnetars are super hot and super cool

Author: Wynn C.G. Ho

University of Southampton

Co-Authors: K.Glampedakis (Universidad de Murcia); N.Andersson (University of Southampton)

Session: HE3: Multi-wavelength observations of compact objects

Presentation type: Talk      00:00  Poster Session B 

Summary:

We examine to what extent the inferred surface temperature of magnetars in quiescence can constrain the presence of a superfluid in the neutron star core and the role of magnetic field decay in the core. By performing detailed simulations of neutron star cooling, we show that extremely strong heating from field decay in the core cannot produce the high observed surface temperatures nor delay the onset of neutron superfluidity in the core. We find that it is not possible to conclude that magnetar cores are in a non-superfluid state purely from high surface temperatures, and we find that neutron superfluidity in the core occurs less than a few hundred years after neutron star formation for core fields < 10^16 G. Thus all known neutron stars, including magnetars, without a core containing exotic particles, should have a core of superfluid neutrons and superconducting protons.

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