Results 41 to 50 of about 11,200,042 (298)
Radial Velocity Dispersions of Star Groups in M67
Open Astronomy, 2016 AbstractHigh-precision measurements of radial velocities of the M67 cluster members are used to calculate the radial-velocity dispersions in the stellar groups found earlier in the cluster’s corona. The previously detected feature in one of the groups (Group 60) consisting of stars with almost identical space velocities was confirmed.
Vereshchagin S. V., Chupina N. V.
openaire +3 more sources
Numerical Simulation of Three-Core Photonic Crystal Fiber With Large Group-Velocity Dispersion
IEEE Access, 2020 The three-core photonic crystal fiber (TC-PCF) is proposed to obtain large group-velocity dispersion (GVD) because of the coupling effects between the fundamental modes (FMs) of the central core and higher-order modes (HOMs) of the two side cores.
Jianfang Yang +3 more
doaj +1 more source
Group refractive index and group velocity dispersion measurement by complex master slave interferometry [PDF]
, 2018 This paper demonstrates that the complex master slave interferometry (CMSI) method used in spectral domain interferometry (SDI) can efficiently be used for accurate refractive index and group velocity dispersion measurements of optically transparent ...
Bairstow, Fiona +5 more
core +1 more source
The anelastic structure and deep geology of the Derbyshire Dome from high frequency Rayleigh waves. [PDF]
, 1984 This work is an investigation of the anelastic structure of the Derbyshire Dome and adjacent areas from the analysis of high frequency, 0.6 - 4.2 Hz, fundamental mode Rayleigh waves observed from quarry blasts within the study area.
McDonald, Andrew James William
core +6 more sources
Strong group-velocity dispersion compensation with phase-engineered sheet metamaterials
, 2014 Resonant metamaterials usually exhibit substantial dispersion, which is considered a shortcoming for many applications. Here we take advantage of the ability to tailor the dispersive response of a metamaterial, introducing a new method of group-velocity ...
Dastmalchi, B. +8 more
core +1 more source
Group velocity of dielectric waveguide modes [PDF]
, 1968 The group velocity and dispersion of surface-wave nodes propagating along a circular dielectric rod are computed and presented graphically in normalised form.
Laybourn, P.J.R.
core +1 more source
Identification of microstructured materials by phase and group velocities
Mathematical Modelling and Analysis, 2009 An inverse problem to determine parameters of microstructured solids by means of group and phase velocities of wave packets is studied. It is proved that in the case of normal dispersion the physical solution is unique and in the case of anomalous ...
Jaan Janno, Jüri Engelbrecht
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JGEUnderstanding of Earth's subsurface is crucial for mitigating geological hazards, particularly earthquakes. A key parameter for subsurface characterization is the surface wave dispersion curve, which strongly reflects shear wave velocity (Vs) at various ...
Muhammad Fachrul Rozi Kurniawan +2 more
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Remote Sensing, 2019 The wavenumber-frequency spectra of many radar measurements of the sea surface contain a linear feature at frequencies lower than the first order dispersion relationship commonly referred to as the “group line”.
Andrew J. Kammerer, Erin E. Hackett
doaj +1 more source
Applied Sciences, 2021 Guided waves have immense potential for structural health monitoring applications in numerous industries including aerospace. It is necessary to evaluate guided wave dispersion characteristics, i.e., group velocity and phase velocity profiles, for using ...
Muhammad Khalid Malik +2 more
doaj +1 more source