Results 41 to 50 of about 354,066 (197)
Material dispersion slope in optical-fibre waveguides
Electronics Letters, 1982 The slope of the material dispersion dM/dλ at λ0, the material dispersion zero where d2n/dλ2=0, can be calculated to yield values applicable to crystals and glasses. The results, in units of ps/nm km μm, range from 217 for B2O3 and 105 for SiO2 to 9 for TI2O and 0.40 for TlI.
K. Nassau, S.H. Wemple
openaire +1 more source
Biases in the Quasar Mass-Luminosity Plane
, 2011 We find that the recently reported departure from the Eddington luminosity limit for the highest quasar black hole masses at a given redshift is an artifact due to biases in black hole mass measurements. This sub-Eddington boundary (with non-unity slope)
Akritas +27 more
core +1 more source
The Dark Matter Distribution in Abell 383: Evidence for a Shallow Density Cusp from Improved Lensing, Stellar Kinematic and X-ray Data [PDF]
, 2011 We extend our analyses of the dark matter (DM) distribution in relaxed clusters to the case of Abell 383, a luminous X-ray cluster at z=0.189 with a dominant central galaxy and numerous strongly-lensed features.
Benítez +22 more
core +2 more sources
Journal of Marine Science and Engineering, 2020 This paper proposes a wave model for the depth inversion of sea bathymetry based on a new highorder dispersion relation which is more suitable for intermediate water depth. The core of this model, a highorder dispersion relation is derived in this paper.
Hongli Ge, Hao Liu, Libang Zhang
doaj +1 more source
Single Feature Extraction Method of Bearing Fault Signals Based on Slope Entropy
Shock and Vibration, 2022 As an entropy representing the complexity of sequence, slope entropy (SloE) is applied to feature extraction of bearing signal for the first time. With the advantage of slope entropy in feature extraction, the effectiveness of bearing fault signal ...
Erna Shi
doaj +1 more source
Getting Super-Excited with Modified Dispersion Relations
, 2017 We demonstrate that in some regions of parameter space, modified dispersion relations can lead to highly populated excited states, which we dub as "super-excited" states.
Ashoorioon, Amjad +3 more
core +1 more source
Variability and the X-ray/UV ratio of Active Galactic Nuclei [PDF]
, 2010 The observed relation between the X-ray radiation from AGNs, originating in the corona, and the optical/UV radiation from the disk is usually described by the anticorrelation between the UV to X-ray slope alpha_ox and the UV luminosity.
Antonucci, M. +3 more
core +1 more source
Synthesis of the refractive index profile of the optical fiber with the account of Kerr nonlinearity
Физика волновых процессов и радиотехнические системы, 2018 In the present paper, we investigate the possibilities of reducing the distortions of propagated in optical fibers high-power femtosecond pulses due to the choice of its refractive index profile, taking into account the profile changes due to the cubic ...
V.A. Burdin, A.V. Bourdine
doaj
First arriving signals in layered waveguides. An approach based on dispersion diagrams
, 2016 The first arriving signal (FAS) in a layered waveguide is investigated. It is well known that the velocity of such a signal is close to the velocity of the fastest medium in the waveguide, and it may be bigger than the fastest group velocity given by the
Shanin, Andrey V.
core +1 more source
, 2013 We assemble a statistical set of global mass models for ~2,000 nearly spherical SDSS galaxies at a mean redshift of 0.12 based on their aperture velocity dispersions and newly derived luminosity profiles in conjunction with published velocity dispersion ...
Bernardi, Mariangela +2 more
core +1 more source