Determination of the Equation of State of Dense Matter

With the recent measurement of GW170817 providing constraints on the tidal deformability (TD) of a neutron star, it is very important to understand what features of the equation of state (EoS) have the biggest effect on it. We therefore study the contribution of the crust to the TD and the moment of inertia (MoI) of a neutron star for a variety of well-known EoS. It is found that the contributions to these quantities from the low-density crust are typically quite small and as a result the determination of the TD provides an important constraint on the EoS of dense matter.

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Excess entropy of the systems of molecules differing in size and shape

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19830192 ◽

1983 ◽

Vol 48 (1) ◽

pp. 192-198 ◽

Cited By ~ 5

Author(s):

Tomáš Boublík

Keyword(s):

Equation Of State ◽

Hard Spheres ◽

Excess Entropy ◽

Convex Bodies ◽

Pure Substance ◽

Liquid Equilibrium ◽

Simple Rules ◽

Different Shapes ◽

The Mean

The excess entropy of mixing of mixtures of hard spheres and spherocylinders is determined from an equation of state of hard convex bodies. The obtained dependence of excess entropy on composition was used to find the accuracy of determining ΔSE from relations employed for the correlation and prediction of vapour-liquid equilibrium. Simple rules were proposed for establishing the mean parameter of nonsphericity for mixtures of hard bodies of different shapes allowing to describe the P-V-T behaviour of solutions in terms of the equation of state fo pure substance. The determination of ΔSE by means of these rules is discussed.

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Equation of State with Kaon Condensation and Hyperons in Dense Matter

Proceedings of the Workshop on Quarks and Compact Stars 2017 (QCS2017) ◽

10.7566/jpscp.20.011038 ◽

2018 ◽

Cited By ~ 1

Author(s):

Takumi Muto ◽

Toshiki Maruyama ◽

Toshitaka Tatsumi ◽

Tatsuyuki Takatsuka

Keyword(s):

Equation Of State ◽

Dense Matter ◽

Kaon Condensation

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Equation of state of dense matter and maximum mass of neutron stars

EAS Publications Series ◽

10.1051/eas:2003043 ◽

2003 ◽

Vol 7 ◽

pp. 249-249 ◽

Cited By ~ 12

Author(s):

P. Haensel

Keyword(s):

Equation Of State ◽

Neutron Stars ◽

Dense Matter ◽

Maximum Mass

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Bayesian inference of the dense-matter equation of state encapsulating a first-order hadron-quark phase transition from observables of canonical neutron stars

Physical Review C ◽

10.1103/physrevc.103.035802 ◽

2021 ◽

Vol 103 (3) ◽

Author(s):

Wen-Jie Xie ◽

Bao-An Li

Keyword(s):

Phase Transition ◽

Bayesian Inference ◽

Equation Of State ◽

Neutron Stars ◽

Dense Matter ◽

First Order ◽

Quark Phase

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Reliability of temperature determination from curve-fitting in multi-wavelength pyrometery

Laser and Particle Beams ◽

10.1017/s0263034612001103 ◽

2013 ◽

Vol 31 (2) ◽

pp. 333-336

Author(s):

P.A. Ni ◽

R.M. More ◽

F.M. Bieniosek

Keyword(s):

Ion Beam ◽

Dense Matter ◽

Warm Dense Matter ◽

Emission Data ◽

Reliable Determination ◽

Temperature Determination ◽

Multi Wavelength ◽

Fitting In ◽

Hot Surface

AbstractThis paper examines the reliability of a widely used method for temperature determination by multi-wavelength pyrometry. In recent warm dense matter experiments with ion-beam heated metal foils, we found that the statistical quality of the fit to the measured data is not necessarily a measure of the accuracy of the inferred temperature. We found a specific example where a second-best fit leads to a more realistic temperature value. The physics issue is the wavelength-dependent emissivity of the hot surface. We discuss improvements of the multi-frequency pyrometry technique, which will give a more reliable determination of the temperature from emission data.

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