Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-11-29
Phys.Rev.Lett.106:081101,2011
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Revised version, to be published in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.106.081101
We propose that the observed cooling of the neutron star in Cassiopeia A is due to enhanced neutrino emission from the recent onset of the breaking and formation of neutron Cooper pairs in the 3P2 channel. We find that the critical temperature for this superfluid transition is ~0.5x10^9 K. The observed rapidity of the cooling implies that protons were already in a superconducting state with a larger critical temperature. Our prediction that this cooling will continue for several decades at the present rate can be tested by continuous monitoring of this neutron star.
Lattimer James M.
Page Dany
Prakash Madappa
Steiner Andrew W.
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