Accreting neutron stars as probes of dense matter physics |
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| Authors: | Edward F Brown Michelle S Ouellette |
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| Institution: | 1. Department of Physics and Astronomy, and National Superconducting Cyclotron Laboratory, Michigan State University, 48824, East Lansing, MI, USA
2. Joint Institute for Nuclear Astrophysics, Michigan State University, 48824, East Lansing, MI, USA
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| Abstract: | There are over 100 accreting neutron stars in our galaxy, in which matter (typically H/He) is tidally transferred from a secondary companion to the neutron star. Accretion of this matter perturbs the thermal structure of the interior away from that of an isolated cooling neutron star. In this paper. we review how this accretion induces reactions in the crust of the neutron star that keep the interior hot. If the accretion is intermittent, then the heated surface layers are directly observable when accretion stops. This heating also affects the unstable ignition of light elements in the neutron star envelope. Observations of the neutron star cooling following an accretion outburst can in principle constrain the thermal properties of the crust and core. |
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