https://doi.org/10.1140/epjc/s10052-023-12223-1
Regular Article - Theoretical Physics
Quark models and radial oscillations: decoding the HESS J1731-347 compact object’s equation of state
1
Centro de Astrofísica e Gravitação-CENTRA, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisbon, Portugal
2
Departamento de Ciencias Físicas, Universidad de la Frontera, Casilla 54-D, 4811186, Temuco, Chile
a
ishfaq.rather@tecnico.ulisboa.pt
Received:
10
September
2023
Accepted:
6
November
2023
Published online:
21
November
2023
We investigate the peculiar nature of strange stars through an analysis of different quark models, i.e. vBag model and CFL model equation of states at different parameter sets, and focus on understanding the equation of state governing the intriguing central compact object (CCO) within the supernova remnant HESS J1731-347, with a mass and radius of 
and 
km, respectively. Additionally, we compare the radial oscillations of two models to determine the frequency of the HESS J1731-347 compact object at its maximum mass. The frequencies of radial oscillations are computed for each of the four EoSs considered. In total, the 10 lowest radial frequencies for each of those EoSs have been computed. By delving into these aspects, we aim at deepening our understanding of strange stars and their connection to the observed HESS J1731-347 mass-radius relationship.
© The Author(s) 2023
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