The electrical conductivity of finite-temperature crust of a warm compact star has been studied in our recent work. We are interested in the conductivity of the material which may be formed in the aftermath of a supernova explosion, binary neutron star merger or when a cold neutron star is heated by accretion of material from a companion. The key objective was to extend the previous results beyond the degenerate regime. A minimum in the conductivity of the matter was found at around one third of Fermi energy. Tables of conductivities are available here: https://arxiv.org/abs/1605.07612
Author: Armen Sedrakian
Limits on axion properties from cooling of neutron stars
Cooling simulations of neutron stars and their comparison with the data from thermally emitting x-ray sources have been used for the first time to put constraints on the properties of axions, and by extension of any light pseudoscalar dark matter particles, whose existence has been postulated to solve the strong-CP problem of QCD, see https://arxiv.org/abs/1512.07828