Neutron star mass-radius relation with gravitational field shielding by a scalar field. Res. Astron. Astrophys. 2013, 13, 571-578.Zhang B. J., Zhang, T. X., Guggila P., Dokhanian M. Neutron star mass- radius relation with gravitational field shielding by a scalar field. Re- search ...
In this work, we determine the neutron star mass-radius relation and, based on recent observations of both transiently accreting and bursting sources, we show that the radius of a 1.4 solar mass neutron star lies between 10.4 and 12.9 km, independent of assumptions about the composition of the...
3.1. The Mass–Radius Relation The hydrostatic equilibrium of spherically symmetric configurations in general relativity was first solved by Tolman and by Oppenheimer and Volkov almost a century ago [32,33]. The resulting equations that govern compact star structures, dubbed the TOV equations, are ...
As a consequence the maximum mass of the star is reduced from about 2.4M⊙ to values in the range 1.9−2.1M⊙. Download: Download high-res image (221KB) Download: Download full-size image Fig. 2. (Colour online) Neutron star EoS (left) and mass-radius relation (right) with and ...
Precise measurements of the radius are coveted by nuclear physicists, because a well-known radius and mass for a neutron star would provide important clues about the nature of the matter in the core. Unfortunately, the systematic errors in current radius estimates are so large that they do not...
the posterior sampling has not yet formally converged and, hence the results are only indicative. The rows show the evolution of the conformal measuredc, the speed of sound squared\({c}_{{{\rm{s}}}^{2}\), polytropic indexγ, mass-radiusM-Rrelation, and pressure-energy-densityp-ϵ...
We further use this inference to estimate bounds on themass-radius relation for neutron stars. By combining the estimates from the two GRBs, we f i nd a 68%credible range R 1.4 = 12.48 +0.41−0.41km for the radius of a neutron star with mass M = 1.4 M ⊙ , which isone of ...
The Neutron Star Mass-Radius Relation and the Equation of State of Dense Matter The equation of state (EOS) of dense matter has been a long-sought goal of nuclear physics. Equations of state generate unique mass versus radius (M-R) rel... AW Steiner,JM Lattimer,EF Brown - 《...
This paper presents the measurement of the neutron star (NS) radius using the thermal spectra from quiescent low-mass X-ray binaries (qLMXBs) inside globular clusters (GCs). Recent observations of NSs have presented evidence that cold ultra dense matter - present in the core of NSs - is be...
[arXiv:1904.09996], which studied the dependence on the PNS mass, but focus on the impact of the nuclear equation of state (EOS). We find that the neutrino event rate depends on both the high-density and low-density EOS, where the former determines the radius of the PNS and the latter...