Could a slow stable hybrid star explain the central compact object in HESS J1731-347?
We explore an alternative explanation for the low-mass ultracompact star in the supernova
remnant HESS J1731-347 using a model-agnostic approach to construct hybrid equations of …
remnant HESS J1731-347 using a model-agnostic approach to construct hybrid equations of …
How the QCD trace anomaly behaves at the core of twin stars?
JC Jiménez, L Lazzari, VP Gonçalves - Physical Review D, 2024 - APS
We investigate the behavior of the dense and cold (normalized) quantum chromodynamics
(QCD) trace anomaly, Δ, in the interior of twin neutron stars (obtained from several sets of …
(QCD) trace anomaly, Δ, in the interior of twin neutron stars (obtained from several sets of …
Asteroseismology using quadrupolar -modes revisited: Breaking of universal relationships in the slow hadron-quark conversion scenario
In this work, we consider polar perturbations, and we calculate the frequency and dam**
time of the quadrupolar fundamental f-mode of compact objects, constructed using a wide …
time of the quadrupolar fundamental f-mode of compact objects, constructed using a wide …
Constraining self-interacting fermionic dark matter in admixed neutron stars using multimessenger astronomy
We investigate the structure of admixed neutron stars with a regular hadronic component
and a fraction of fermionic self-interacting dark matter. Using two limiting equations of state …
and a fraction of fermionic self-interacting dark matter. Using two limiting equations of state …
Two first-order phase transitions in hybrid compact stars: Higher-order multiplet stars, reaction modes, and intermediate conversion speeds
PB Rau, A Sedrakian - Physical Review D, 2023 - APS
We study compact stars with hybrid equations of state consisting of a nuclear outer region
and two nested quark phases, each separated from the lower density phase by a strong first …
and two nested quark phases, each separated from the lower density phase by a strong first …
Hybrid stars with reactive interfaces: Analysis within the Nambu–Jona-Lasinio model
It has been shown recently that quark-hadron conversions at the interface of a hybrid star
may have a key role on the dynamic stability of the compact object. In this work we perform a …
may have a key role on the dynamic stability of the compact object. In this work we perform a …
Impact of dark energy on the structure of neutron stars: The vacuum case
The potential role of a cosmic vacuum dark component in the properties of neutron stars is
investigated. It is assumed that the static, spherically symmetric distribution of matter within …
investigated. It is assumed that the static, spherically symmetric distribution of matter within …
Nonequilibrium effects on stability of hybrid stars with first-order phase transitions
PB Rau, GG Salaben - Physical Review D, 2023 - APS
The stability of hybrid stars with first-order phase transitions as determined by calculating
fundamental radial oscillation modes is known to differ from the predictions of the widely …
fundamental radial oscillation modes is known to differ from the predictions of the widely …
Impact of slow conversions on hybrid stars with sequential QCD phase transitions
VP Gonçalves, L Lazzari - The European Physical Journal C, 2022 - Springer
In this paper, we investigate the impact of the phase conversion speed on the properties of
hybrid stars with sequential sharp QCD phase transitions. We consider that these hybrid …
hybrid stars with sequential sharp QCD phase transitions. We consider that these hybrid …
Modern nuclear and astrophysical constraints of dense matter in a redefined chiral approach
We explore the quantum chromodynamics (QCD) phase diagram's complexities, including
quark deconfinement transitions, liquid-gas phase changes, and critical points by using the …
quark deconfinement transitions, liquid-gas phase changes, and critical points by using the …