EPJ Web Conf.
Volume 178, 201816th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16)
|Number of page(s)||5|
|Published online||16 May 2018|
The Great Wall: Urca Cooling Layers in the Accreted NS Crust
Department of Physics and Astronomy, Ohio University, 45701 Athens, Ohio USA
* Email: firstname.lastname@example.org
Published online: 16 May 2018
Accreting neutron stars host a number of astronomical observables which can be used to infer the properties of the underlying dense matter. These observables are sensitive to the heating and cooling processes taking place in the accreted neutron star (NS) crust. Within the past few years it has become apparent that electron-capture/beta-decay (urca) cycles can operate within the NS crust at high temperatures. Layers of nuclei undergoing urca cycling can create a thermal barrier, or Great Wall, between heating occurring deep in the crust and the regions above the urca layers. This paper briefly reviews the urca process and the implications for observables from accreting neutron stars.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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