Report
Constraining a relativistic mean field model using neutron star mass-radius measurements II: Hyperonic models
| العنوان: | Constraining a relativistic mean field model using neutron star mass-radius measurements II: Hyperonic models |
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| المؤلفون: | Huang, Chun, Tolos, Laura, Providência, Constança, Watts, Anna |
| المصدر: | Monthly Notices of the Royal Astronomical Society, Volume 536, Issue 4, February 2025, Pages 3262-3275 |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics Nuclear Theory |
| مصطلحات موضوعية: | Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics, Nuclear Theory |
| الوصف: | We investigate whether measurements of the neutron star mass and radius or the tidal deformability can provide information about the presence of hyperons inside a neutron star. This is achieved by considering two inference models, with and without hyperons, based on a field-theoretical approach. While current observations do not distinguish between the two scenarios, we have shown that data simulating expected observations from future large area X-ray timing telescopes could provide some information through Bayes factors. Inference using simulated data generated from an EOS containing hyperons decisively favours the hyperonic model over the nucleonic model. However, a 2\% uncertainty in the mass and radius determination may not be sufficient to constrain the parameters of the model when only six neutron star mass-radius measurements are considered. Comment: published on MNRAS |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1093/mnras/stae2792 |
| URL الوصول: | http://arxiv.org/abs/2410.14572 |
| رقم الانضمام: | edsarx.2410.14572 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1093/mnras/stae2792 |
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