Cooling of a rotating strange star with a crust

Details Cooling of a rotating strange star with a crust Cooling of a rotating strange star with a crust

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...344..371y&link_type=abstract

Astronomy and Astrophysics, v.344, p.371-375 (1999)

Astronomy and Astrophysics

Astrophysics

14

Dense Matter, Elementary Particles, Stars: Interiors, Stars: Neutron

Scientific paper

As a strange star spins down, the nuclear matter in its crust contracts continuously into the quark core. The confined nuclear matter is dissolved into quark matter, liberating a lot of thermal energy. This process is called deconfinement heating. It is found that deconfinement heating dramatically changes the thermal evolution of a strange star. For a strange star with a strong surface magnetic field ( ~ 10(12) Gauss), the star heats instead of cooling during the first 10 years. Therefore, contrary to the previous studies, we conclude that there is evidence for strange quark matter, if a heating period is observed for a very young pulsar. For a strange star with a weaker magnetic field, the surface temperature is higher than that of a neutron star in the photon cooling era. This could also signal the existence of strange quark matter.

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