Strong magnetic fields and pasta phases revisited

Bibliographic Details
Main Author: Scurto, Luigi
Publication Date: 2022
Other Authors: Pais, Helena, Gulminelli, Francesca
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: https://hdl.handle.net/10316/113434
https://doi.org/10.1103/PhysRevC.107.045806
Summary: 11 pages, 5 figures, 3 tables. Version published on Phys. Rev. C
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spelling Strong magnetic fields and pasta phases revisitedNuclear Theoryastro-ph.HE11 pages, 5 figures, 3 tables. Version published on Phys. Rev. CIn this work, we compute the structure and composition of the inner crust of a neutron star in the presence of a strong magnetic field, such as it can be found in magnetars. To determine the geometry and characteristics of the crust inhomogeneities, we consider the compressible liquid drop model, where surface and Coulomb terms are included in the variational equations, and we compare our results with previous calculations based on more approximate treatments. For the equation of state (EoS), we consider two non-linear relativistic mean-field models with different slopes of the symmetry energy, and we show that the extension of the inhomogeneous region inside the star core due to the magnetic field strongly depends on the behavior of the symmetry energy in the crustal EoS. Finally, we argue that the extended spinodal instability observed in previous calculations can be related to the presence of small amplitude density fluctuations in the magnetar outer core, rather than to a thicker solid crust. The compressible liquid drop model formalism, while in overall agreement with the previous calculations, leads to a systematic suppression of the metastable solutions, thus allowing a more precise estimation of the crust-core transition density and pressure, and therefore a better estimation of the crustal radius.This work was partly supported by the FCT (Portugal) Projects No. 2022.06460.PTDC and UID/FIS/04564/2020, and by the IN2P3 Master Project NewMAC. L.S. acknowledges PhD Grant no. 2021.08779.BD (FCT, Portugal), and LPC-Caen for support. H.P. acknowledges her former Grant no. CEECIND/03092/2017 (FCT, Portugal) while at CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal.American Physical Society2022-12-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://hdl.handle.net/10316/113434https://hdl.handle.net/10316/113434https://doi.org/10.1103/PhysRevC.107.045806eng2469-99852469-9993http://arxiv.org/abs/2212.09355v2Scurto, LuigiPais, HelenaGulminelli, Francescainfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-10-03T16:19:47Zoai:estudogeral.uc.pt:10316/113434Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T06:06:20.370600Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Strong magnetic fields and pasta phases revisited
title Strong magnetic fields and pasta phases revisited
spellingShingle Strong magnetic fields and pasta phases revisited
Scurto, Luigi
Nuclear Theory
astro-ph.HE
title_short Strong magnetic fields and pasta phases revisited
title_full Strong magnetic fields and pasta phases revisited
title_fullStr Strong magnetic fields and pasta phases revisited
title_full_unstemmed Strong magnetic fields and pasta phases revisited
title_sort Strong magnetic fields and pasta phases revisited
author Scurto, Luigi
author_facet Scurto, Luigi
Pais, Helena
Gulminelli, Francesca
author_role author
author2 Pais, Helena
Gulminelli, Francesca
author2_role author
author
dc.contributor.author.fl_str_mv Scurto, Luigi
Pais, Helena
Gulminelli, Francesca
dc.subject.por.fl_str_mv Nuclear Theory
astro-ph.HE
topic Nuclear Theory
astro-ph.HE
description 11 pages, 5 figures, 3 tables. Version published on Phys. Rev. C
publishDate 2022
dc.date.none.fl_str_mv 2022-12-19
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/10316/113434
https://hdl.handle.net/10316/113434
https://doi.org/10.1103/PhysRevC.107.045806
url https://hdl.handle.net/10316/113434
https://doi.org/10.1103/PhysRevC.107.045806
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2469-9985
2469-9993
http://arxiv.org/abs/2212.09355v2
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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