摘要: We show that shearfree perfect fluids obeying an equation of state p=(gamma -1) mu are non-rotating or non-expanding under the assumption that the spatial divergence of the magnetic part of the Weyl tensor is zero.关键词: Technology and Engineering ...
We adopt a \\Gamma \\Gamma -law equation of state in the form P=(\\Gamma-1)ho\\epsilon P=(\\Gamma-1)ho\\epsilon where P, ho ho , \\varep \\varep and \\Gamma \\Gamma are the pressure, rest mass density, specific in...
et al. New constraints on the supranuclear equation of state and the Hubble constant from nuclear physics - multi-messenger astronomy. Science 370, 1450–1453 (2020). Article ADS MathSciNet Google Scholar Gompertz, B. P. et al. The diversity of kilonova emission in short gamma-ray bursts....
ItalyWehaveperformed3Dnumericalsimulationsformergerofequalmassbinaryneutronstarsinfullgeneralrelativity.WeadoptaΓ-lawequationofstateintheformP=(Γ−1)ρεwhereP,ρ,εandΓarethepressure,restmassdensity,specificinternalenergy,andtheadiabaticconstantwithΓ=2.Asinitialconditions,weadoptmodelsofcorotationaland...
Depending on the masses of the stars in the binary and on details of their largely unknown equation of state, a dynamically evolving and short-lived neutron star may be formed after the merger, existing for approximately 10–300 ms before collapsing to a black hole2,3. Numerical relativity...
The following basic equation assumes a narrow beam of radiation penetrating a thin shield (a situation referred to as “good geometry”). (3.9)Ẋ=Ẋ0e−ux where Ẋ = exposure rate with the shield in place (e.g., R/h); Ẋ0 = exposure rate without the shield (e.g., ...
In the present work, the generalized hypergeometric functions become elements of a gamma vector which, by means of a partial differential equation and a matrix transformation relation, can be used in calculating the gamma vector in physical regions where the hypergeometric functions are nonconvergent ...
directly. This mode of interaction is called theCompton effectafter its discoverer, A. H. Compton. In the Compton effect an electron is ejected from an atom while the γ-ray is deflected with a lower energy. The energy of the scattered γ-ray,Eγ′, is expressed by the equation ...
In this work, we comprehensively investigate the structural, electronic, transport, phonon, and thermoelectric properties of novel Janus γ-Pb2XY (X=S, Se; Y=Se, Te; X≠Y) monolayers using density functional theory combined with the Boltzmann transport equation. Our findings unveil the energetic...
aSpain and Portugal, as well as Luxembourg) and the investment-saving equation for the remaining 14 OECD countries. It should be emphasized that the EEC savings retention coefficient does not reflect the extent of the capital flow among the EEC countries but rather the extent to which individual...