Simultaneous explanation of XTE J1814-338 and HESS J1731-347 objects using K- and K<overline>0 condensates

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F25%3A00387817" target="_blank" >RIV/68407700:21670/25:00387817 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.111.L061308" target="_blank" >https://doi.org/10.1103/PhysRevD.111.L061308</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.111.L061308" target="_blank" >10.1103/PhysRevD.111.L061308</a>

Result language
angličtina
Original language name
Simultaneous explanation of XTE J1814-338 and HESS J1731-347 objects using K- and K<overline>0 condensates
Original language description
The recent observation of the compact star XTE J1814-338 with a mass of M = 1.2 & thorn;0.05 of R = 7 & thorn;0.4 -0.4 km, together with the HESS J1731-347, which has a mass of M = 0.77 & thorn;0.20 of R = 10.4 & thorn;0.86 -0.78 km, shows they provide evidence for the possible presence of exotic matter in the core of neutron stars and significantly enhance our understanding of the equation of state for the dense nuclear matter. In the present study, we investigate the possible existence of negative charged kaons and neutral antikaons in neutron stars by employing the relativistic mean field model with first order kaonic (K- and K0) condensates. To the best of our knowledge, this represents a first alternative attempt aimed to explain<overline> the bulk properties of the XTE J1814-338 object and at the same time the HESS J1731-347 object, using a mixture of kaon condensation in dense nuclear matter. In addition, we compare our analysis approach with the recent observation of PSR J0437-4715 and PSR J1231-1411 pulsars, proposing that to simultaneously explain the current variety of astrophysical objects, it is essential to resurrect a scenario of two distinct branches, each corresponding to a different composition of nuclear matter.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GA21-24281S" target="_blank" >GA21-24281S: Experiment IS581 "(d,p)-transfer induced fission of heavy radioactive beams"</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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