نتایج جستجو برای: where ω angular frequency aki
تعداد نتایج: 1320427 فیلتر نتایج به سال:
We calculate the distribution of transverse energy, QΩ, radiated into an arbitrary interjet angular region, Ω, in high-pT two-jet events. We find a distribution that can be extrapolated smoothly to QΩ = ΛQCD, where it vanishes. This method provides a class of predictions on transverse energy radiated between jets, as a function of jet energy and rapidity, and of the choice of the region Ω in wh...
The numerical study of electromagnetic wave propagation in nanophotonic devices requires among others the integration of various types of dispersion models, such as the Drude one, in numerical methodologies. Appropriate approaches have been extensively developed in the context of the Finite Differences Time-Domain (FDTD) method, such as in [1] for example. For the discontinuous Galerkin time-do...
We investigate the cosmological test recently proposed by B. Fort, Y. Mellier and M. Dantel-Fort (FMD), where the observed location of the critical line in gravitational lensing is used to determine the cosmological parameters, Ω and λ. Applying this method to the cluster of galaxies Cl0024+1654, FMD obtained a constraint on the cosmological constant, λ > 0.6, assuming the spatially flat univer...
1 Introduction The trapped electron mode (TEM) is generally unstable in tokamaks for short poloidal wavelengths, k θ ρ i ~ 1, where k θ is the poloidal wavenumber and ρ i is the ion Larmor radius. Trapped electrons exist at lower collisionalities, ν* = ν eff /ω be < 1, where ν eff = ν e /ε with ν e the electron collision frequency and ε = r/R is the inverse aspect ratio, where r and R are the m...
BACKGROUND The patterns, performance characteristics, and yield of diagnostic tests ordered for the evaluation of acute kidney injury (AKI) have not been rigorously evaluated. METHODS We characterized the frequency of AKI diagnostic testing for urine, blood, radiology, and pathology tests in all adult inpatients who were admitted with or developed AKI (N = 4903 patients with 5731 AKI episodes...
We present a description for the angular momentum loss rate due to magnetic braking for late type stars taking into account recent observational data on the relationship between stellar activity and rotation. The analysis is based on an idealized two component coronal model subject to constraints imposed on the variation of the coronal gas density with rotation period inferred from the observed...
The superradiant scattering of a scalar field with frequency and angular momentum (ω,m) by a near-extreme Kerr black hole with mass and spin (M,J) was derived in the seventies by Starobinsky, Churilov, Press and Teukolsky. In this paper we show that for frequencies scaled to the superradiant bound the full functional dependence on (ω,m,M, J) of the scattering amplitudes is precisely reproduced ...
The spectral characteristics of combustion noise is dictated by the temporal correlation of the heat release rate fluctuation. This paper investigates the two-point space-time correlation of heat release rate fluctuations by analysing recent direct numerical simulation (DNS) data of turbulent premixed flames. The results show that this correlation decays rapidly in both space and time due to th...
We discuss the graviton absorption probability (greybody factor) and the cross-section of a higherdimensional Schwarzschild black hole (BH). We are motivated by the suggestion that a great many BHs may be produced at the LHC and bearing this fact in mind, for simplicity, we shall investigate the intermediate energy regime for a static Schwarzschild BH. That is, for (2M)ω ∼ 1, where M is the mas...
A correlation between the surface density of foreground galaxies tracing the Large Scale Structure and the position of distant galaxies and quasars is expected from the magnification bias effect (Canizares 1981). We show that this foreground–background correlation function wfb can be used as a straightforward and almost model-free method to measure the cosmological ratio Ω/b. For samples with a...
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