The effect of the energy functional on the pasta-phase properties of catalysed neutron stars
| Autor: | Francesca Gulminelli, Anthea Fantina, H. Dinh Thi |
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| Přispěvatelé: | Laboratoire de physique corpusculaire de Caen (LPCC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Normandie Université (NU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
Physics
High Energy Astrophysical Phenomena (astro-ph.HE) Nuclear and High Energy Physics Chiral perturbation theory Nuclear Theory [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] 010308 nuclear & particles physics FOS: Physical sciences Nuclear matter 01 natural sciences 3. Good health Nuclear pasta Computational physics Surface tension Nuclear Theory (nucl-th) Neutron star Phase (matter) 0103 physical sciences Compressibility Astrophysics - High Energy Astrophysical Phenomena 010306 general physics Energy functional |
| Zdroj: | The European Physical Journal A The European Physical Journal A, Springer, 2021, 57 (10), pp.296. ⟨10.1140/epja/s10050-021-00605-6⟩ Eur.Phys.J.A Eur.Phys.J.A, 2021, 57 (10), pp.296. ⟨10.1140/epja/s10050-021-00605-6⟩ |
| ISSN: | 1434-6001 |
| DOI: | 10.48550/arxiv.2111.04374 |
| Popis: | Nuclear pasta, that is an inhomogeneous distribution of nuclear matter characterised by non-spherical clustered structures, is expected to occur in a narrow spatial region at the bottom of the inner crust of neutron stars, but the width of the pasta layer is strongly model dependent. In the framework of a compressible liquid-drop model, we use Bayesian inference to analyse the constraints on the sub-saturation energy functional and surface tension imposed by both ab-initio chiral perturbation theory calculations and experimental measurements of nuclear masses. The posterior models are used to obtain general predictions for the crust-pasta and pasta-core transition with controlled uncertainties. A correlation study allows extracting the most influential parameters for the calculation of the pasta phases. The important role of high-order empirical parameters and the surface tension is underlined. Comment: 15 pages, 11 figures. Contribution to the EPJ A topical issue "CompOSE: a repository for Neutron Star Equations of State and Transport Properties" |
| Databáze: | OpenAIRE |
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