Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.4408d&link_type=abstract
American Astronomical Society, HEAD meeting #12, #44.08
Astronomy and Astrophysics
Astronomy
Scientific paper
A profound reason to study neutron stars is that these stellar remnants provide a gateway to explore the behavior of matter under extreme physical conditions that are unattainable on Earth. We present new observational evidence for the temporary heating and subsequent cooling of the outer layers of a recently discovered neutron star that resides in a transient X-ray binary. Our findings provide strong support for the hypothesis that the accretion process causes a release of heat energy in a chain of nuclear reactions occurring deep inside the neutron star crust. Studies of the cooling of an accretion-heated neutron star crust can probe important stellar parameters, such as the thermal conductivity of the crust and the dominant neutrino emission mechanism operating in the core. This allows the investigation of a variety of processes occurring in the extreme density and pressure environment of the neutron star interior.
Brown Edward F.
Degenaar Nathalie
Wijnands Rudy
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