Vortex Dynamics in Color-Superconducting Quark stars: The Re-heating of Magnetars - Astrophysics > High Energy Astrophysical PhenomenaReport as inadecuate




Vortex Dynamics in Color-Superconducting Quark stars: The Re-heating of Magnetars - Astrophysics > High Energy Astrophysical Phenomena - Download this document for free, or read online. Document in PDF available to download.

Abstract: Compact stars made of quark matter rather than confined hadronic matter, areexpected to form a color superconductor. This superconductor ought to bethreaded with rotational vortex lines within which the star-s interior magneticfield is confined. The vortices and thus magnetic flux would be expelled fromthe star during stellar spin-down, leading to magnetic reconnection at thesurface of the star and the prolific production of thermal energy. In thisLetter, we show that this energy release can re-heat quark stars toexceptionally high temperatures, such as observed for Soft Gamma RepeatersSGRs, Anomalous X-Ray pulsars AXPs, and X-ray dim isolated neutron starsXDINs. Moreover, our numerical investigations of the temperature evolution,spin-down rate, and magnetic field behavior of such superconducting quark starssuggest that SGRs, AXPs, and XDINs may be linked ancestrally. Finally, wediscuss the possibility of a time delay before the star enters the colorsuperconducting phase, which can be used to estimate the density at whichquarks deconfine. We find this density to be five times that of nuclearsaturation.



Author: Brian Niebergal, Rachid Ouyed, Rodrigo Negreiros, Fridolin Weber

Source: https://arxiv.org/







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