Results 1 to 10 of about 203,600 (192)

Quark star matter at finite temperature in a quasiparticle model [PDF]

open access: diamondEuropean Physical Journal C: Particles and Fields, 2021
We study the thermodynamic properties of asymmetric quark matter, large mass quark stars (QSs), and proto-quark stars (PQSs) within the quasiparticle model. Considering the effects of temperature within quasiparticle model can significantly influence the
Peng-Cheng Chu   +5 more
doaj   +2 more sources

Quark star matter within an extended quasiparticle model

open access: diamondEuropean Physical Journal C: Particles and Fields
In this work, we extend the quasiparticle model to include the chemical potential dependence of the coupling constant g and consider the density-dependent bag constant $$B_m$$ B m in order to satisfy the asymptotic freedom feature.
Peng-Cheng Chu   +6 more
doaj   +2 more sources

Cooling of neutron stars with quark-hadron continuity [PDF]

open access: yesEPJ Web of Conferences, 2022
Neutron stars are high-density objects formed by the gravitational collapse of massive stars, and the whole star can be likened to a giant nucleus. The interior of a neutron star is considered to contain exotic particles and states which do not appear in
Noda Tsuneo   +4 more
doaj   +1 more source

Neutron Star Mergers and the Quark Matter Equation of State [PDF]

open access: yesEPJ Web of Conferences, 2022
As neutron stars merge they can approach very high nuclear density. Here, we summarized recent results for the evolution and gravitational wave emission from binary-neutron star mergers using a a variety of nuclear equations of state with and without a ...
Mathews Grant J.   +3 more
doaj   +1 more source

The Macro-Physics of the Quark-Nova: Astrophysical Implications

open access: yesUniverse, 2022
A quark-nova is a hypothetical stellar evolution branch where a neutron star converts explosively into a quark star. Here, we discuss the intimate coupling between the micro-physics and macro-physics of the quark-nova and provide a prescription for how ...
Rachid Ouyed
doaj   +1 more source

Semi-empirical relation to understand matter properties at neutron star interiors

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
The occurrence of quark matter at the center of neutron stars is still in debate. This study defines some semi-empirical parameters that try to quantify the presence and the amount of quark matter at star interiors.
Ritam Mallick   +2 more
doaj   +1 more source

What Is the Nature of the HESS J1731-347 Compact Object?

open access: yesThe Astrophysical Journal, 2023
Once further confirmed in future analyses, the radius and mass measurement of HESS J1731-347 with $M={0.77}_{-0.17}^{+0.20}\,{M}_{\odot }$ and $R={10.4}_{-0.78}^{+0.86}\,\mathrm{km}$ will be among the lightest and smallest compact objects ever detected ...
Violetta Sagun   +5 more
doaj   +1 more source

Gravitational Waves from Strange Star Core–Crust Oscillation

open access: yesUniverse, 2022
According to the strange quark matter hypothesis, pulsars may actually be strange stars composed of self-bound strange quark matter. The normal matter crust of a strange star, unlike that of a normal neutron star, is supported by a strong electric field.
Ze-Cheng Zou   +2 more
doaj   +1 more source

Quark star matter in heavy quark stars

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We study the thermodynamic properties of asymmetric quark matter and large mass quark stars within the confined-isospin-density-dependent-quark-mass model. We find that the quark matter symmetry energy should be very large in order to describe the recent
Peng-Cheng Chu   +6 more
doaj   +1 more source

Dark matter effects on hybrid star properties

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In the present work, we investigate the effects of dark matter (DM) on hybrid star properties. We assume that dark matter is mixed with both hadronic and quark matter and interacts with them through the exchange of a Higgs boson.
C. H. Lenzi   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy