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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA21-24281S" target="_blank" >GA21-24281S: Experiment IS581 "Štěpení těžkých radiaktivních svazků v reakcích (d,p)-transferu"</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

111

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

1-5

Kód UT WoS článku

001460801900007

EID výsledku v databázi Scopus

2-s2.0-105001820302