Results 1 to 10 of about 754,427 (294)
Quark star matter in heavy quark stars [PDF]
European 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 +4 more sources
The quark strange star in the enlarged Nambu-Jona-Lasinio model [PDF]
NewJ.Phys.4:14,2002, 2002 The strange quark star is investigated within the enlarged SU(3) Nambu-Jona-Lasinio (NJL). The stable quark star exists till maximal configutation with rho_m=3.1, 10^15, g/cm^3 with M_m=1.61, M_Sun and R_m=8.74, km is reached. Strange quarks appear for density above rho_c=9.84 g/cm^3 for the quark star with radius R_c=8.003 km and M_c=0.77, M_Sun.
R. Mańka +2 more
arxiv +8 more sources
Quark star matter at finite temperature in a quasiparticle model [PDF]
European 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 +3 more sources
Structure of Quark Stars [PDF]
Proceedings of the International Astronomical Union, 2012 This paper gives an brief overview of the structure of hypothetical strange quarks stars (quark stars, for short), which are made of absolutely stable 3-flavor strange quark matter. Such objects can be either bare or enveloped in thin nuclear crusts, which consist of heavy ions immersed in an electron gas. In contrast to neutron stars, the structure of
Weber, Fridolin +3 more
arxiv +7 more sources
Strange quark mass dependence of strange quark star properties
European Physical Journal C: Particles and Fields, 2021 The effects of strange quark mass on masses, radii, and tidal deformabilities of strange quark stars are studied via the quasiparticle model that includes the non-perturbative features of QCD in low density region. The constraints of $$M_{\mathrm {TOV}} >
Bo-Lin Li, Yan Yan, Jia-Lun Ping
doaj +2 more sources
Is the Compact Object Associated with HESS J1731-347 a Strange Quark Star? A Possible Astrophysical Scenario for Its Formation [PDF]
Astrophysical Journal, 2022 The analysis of the central compact object within the supernova (SN) remnant HESS J1731-347 suggests that it has a small radius and, even more interestingly, a mass of the order or smaller than 1 M ⊙.
Francesco Di Clemente +2 more
openalex +2 more sources
The Hadron-quark Crossover in Neutron Star within Gaussian Process Regression Method [PDF]
The Astrophysical Journal, 2022 The equations of state of the neutron star at the hadron-quark crossover region are interpolated with the Gaussian process regression (GPR) method, which can reduce the randomness of present interpolation schemes.
Kaixuan Huang +3 more
doaj +2 more sources
Quark deconfinement in neutron star cores and the ground state of neutral matter [PDF]
Eur.Phys.J.A34:153-160,2007, 2007 Whether or not deconfined quark phase exists in neutron star cores and represents the ground state of neutral matter at moderate densities are open questions. We use two realistic effective quark models, the three-flavor Nambu-Jona-Lasinio model and the modified quark-meson coupling model, to describe the neutron star matter.
Alford +33 more
arxiv +4 more sources
Gravitational wave signature from phase transition of a combusting neutron star to quark star [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Fluctuation at the neutron star centre gives rise to a small deconfined quark core very close to the star centre. The density discontinuity at the quark–hadron boundary initiates a shock wave, which propagates outwards of the star. The shock has enough
Ritam Mallick +2 more
openalex +3 more sources
A Polytropic Model of Quark Stars [PDF]
Astropart.Phys.31:128-134,2009, 2008 A polytropic quark star model is suggested in order to establish a general framework in which theoretical quark star models could be tested by observations. The key difference between polytropic quark stars and the polytropic model studied previously for normal (i.e., non-quarkian) stars is related to two issues: (i) a constant term representing the ...
X.Y. Lai, Renxin Xu
arxiv +5 more sources