Multi-physics constraints at different densities to probe nuclear symmetry energy in hyperonic neutron stars
- The appearance of strangeness in the form of hyperons within the inner core of neutron stars is expected to affect its detectable properties, such as its global structure or gravitational wave emission. This work explores the parameter space of hyperonic stars within the framework of the Relativistic Mean Field model allowed by the present uncertainties in the state-of-the-art nuclear and hypernuclear experimental data. We impose multi-physics constraints at different density regimes to restrict the parameter space: Chiral effective field theory, heavy-ion collision data, and multi-messenger astrophysical observations of neutron stars. We investigate possible correlations between empirical nuclear and hypernuclear parameters, particularly the symmetry energy and its slope, with observable properties of neutron stars. We do not find a correlation for the hyperon parameters and the astrophysical data. However, the inclusion of hyperons generates a tension between the astrophysical and heavy-ion data constraining considerably the available parameter space.
Author: | Suprovo GhoshORCiD, Bikram Keshari PradhanORCiD, Debarati ChatterjeeORCiDGND, Jürgen Schaffner-BielichORCiDGND |
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URN: | urn:nbn:de:hebis:30:3-827040 |
DOI: | https://doi.org/10.3389/fspas.2022.864294 |
ISSN: | 2296-987X |
Parent Title (English): | Frontiers in astronomy and space sciences |
Publisher: | Frontiers Media |
Place of publication: | Lausanne |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2022/03/28 |
Date of first Publication: | 2022/03/28 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2024/05/07 |
Tag: | equation of state; heavy-ion; hypernuclear; hyperons; multi-messenger; neutron stars; nuclear; symmetry energy |
Volume: | 9 |
Issue: | art. 864294 |
Article Number: | 864294 |
Page Number: | 14 |
First Page: | 1 |
Last Page: | 14 |
Note: | This work was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the CRC-TR 211 “Strong-Interaction Matter Under Extreme Conditions”– project number 315477589—TRR 211. |
HeBIS-PPN: | 519209532 |
Institutes: | Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Licence (German): | Creative Commons - CC BY - Namensnennung 4.0 International |