The Great Wall: Urca Cooling Layers in the Accreted NS Crust

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 beco...

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Main Author: Meisel Zach
Format: Article
Language:English
Published: EDP Sciences 2018-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201817804004
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spelling doaj-086ff64a7a1347bca410c52e3678518e2021-08-02T04:24:42ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011780400410.1051/epjconf/201817804004epjconf_cgs162018_04004The Great Wall: Urca Cooling Layers in the Accreted NS CrustMeisel ZachAccreting 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.https://doi.org/10.1051/epjconf/201817804004
collection DOAJ
language English
format Article
sources DOAJ
author Meisel Zach
spellingShingle Meisel Zach
The Great Wall: Urca Cooling Layers in the Accreted NS Crust
EPJ Web of Conferences
author_facet Meisel Zach
author_sort Meisel Zach
title The Great Wall: Urca Cooling Layers in the Accreted NS Crust
title_short The Great Wall: Urca Cooling Layers in the Accreted NS Crust
title_full The Great Wall: Urca Cooling Layers in the Accreted NS Crust
title_fullStr The Great Wall: Urca Cooling Layers in the Accreted NS Crust
title_full_unstemmed The Great Wall: Urca Cooling Layers in the Accreted NS Crust
title_sort great wall: urca cooling layers in the accreted ns crust
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2018-01-01
description 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.
url https://doi.org/10.1051/epjconf/201817804004
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