Strong neutrino cooling by cycles of electron capture and β− decay in neutron star crusts

H. Schatz (), S. Gupta, P. Möller, M. Beard, E. F. Brown, A. T. Deibel, L. R. Gasques, W. R. Hix, L. Keek, R. Lau, A. W. Steiner and M. Wiescher
Additional contact information
H. Schatz: National Superconducting Cyclotron Laboratory, Michigan State University, 640 South Shaw Lane, East Lansing, Michigan 48824, USA
S. Gupta: Indian Institute of Technology Ropar, Nangal Road, Rupnagar (Ropar), Punjab 140 001, India
P. Möller: Joint Institute for Nuclear Astrophysics, 225 Nieuwland Science Hall, University of Notre Dame
M. Beard: Joint Institute for Nuclear Astrophysics, 225 Nieuwland Science Hall, University of Notre Dame
E. F. Brown: National Superconducting Cyclotron Laboratory, Michigan State University, 640 South Shaw Lane, East Lansing, Michigan 48824, USA
A. T. Deibel: Joint Institute for Nuclear Astrophysics, 225 Nieuwland Science Hall, University of Notre Dame
L. R. Gasques: Instituto de Física da Universidade de São Paulo, Caixa Postal 66318, 05315-970 São Paulo, Brazil
W. R. Hix: Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, Tennessee 37831-6354, USA
L. Keek: National Superconducting Cyclotron Laboratory, Michigan State University, 640 South Shaw Lane, East Lansing, Michigan 48824, USA
R. Lau: National Superconducting Cyclotron Laboratory, Michigan State University, 640 South Shaw Lane, East Lansing, Michigan 48824, USA
A. W. Steiner: Joint Institute for Nuclear Astrophysics, 225 Nieuwland Science Hall, University of Notre Dame
M. Wiescher: Joint Institute for Nuclear Astrophysics, 225 Nieuwland Science Hall, University of Notre Dame

Nature, 2014, vol. 505, issue 7481, 62-65

Abstract: Cycles of electron capture and β− decay involving neutron-rich nuclei at a typical depth of about 150 metres are found to cool the outer crust of a neutron star by emitting neutrinos while also thermally decoupling the surface layers from the deeper crust; this mechanism has been studied in other astrophysical environments, but has not hitherto been considered in neutron stars.

Date: 2014
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DOI: 10.1038/nature12757

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