Rapid cooling of the neutron star in cassiopeia a and r-mode damping in the core

Abstract

We proposed an alternative explanation to the rapid cooling of neutron star in Cas A. It is suggested that the star experiences the recovery period following the r-mode heating process assuming the star is differentially rotating. Like the neutron-superfluidity-triggering model, our model predicts that the rapid cooling will continue for several decades. However, the behavior of the two models has slight differences, and they might be distinguished by observations in the near future. © 2011. The American Astronomical Society. All rights reserved.