Results 31 to 40 of about 93,534 (317)
Nutation terms adjustment to VLBI and implication for the Earth rotation resonance parameters
Geophysical Journal International, 2020 The nutation harmonic terms are commonly determined from celestial pole offset series produced from very long baseline interferometry (VLBI) time delay analysis. This approach is called an indirect approach.
I. N. Huda +3 more
semanticscholar +1 more source
Comparing Post-Newtonian and Numerical-Relativity Precession Dynamics [PDF]
, 2015 Binary black-hole systems are expected to be important sources of gravitational waves for upcoming gravitational-wave detectors. If the spins are not colinear with each other or with the orbital angular momentum, these systems exhibit complicated ...
Boyle, Michael +5 more
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Nutation and Reference Frame [PDF]
Highlights of Astronomy, 1995 The reference frames are of fundamental importance in all kinds of the precession and nutation studies involving the theory, the coordinate transformation and the observations. The aim of this paper is to review all the frames used in such studies and to lead to a better consistency between them in order that theory and reductions of observations be ...
openaire +1 more source
Wide nutation: binary black-hole spins repeatedly oscillating from full alignment to full anti-alignment [PDF]
Classical and quantum gravity, 2018 Within the framework of 2PN black-hole binary spin precession, we explore configurations where one of the two spins oscillates from being completely aligned with the orbital angular momentum to being completely anti-aligned with it during a single ...
D. Gerosa +5 more
semanticscholar +1 more source
Magnetization nutation induced by surface effects in nanomagnets [PDF]
Physical review B, 2018 We investigate the magnetization dynamics of ferromagnetic nanoparticles in the atomistic approach taking account of surface anisotropy and the spin misalignment it causes. We demonstrate that such inhomogeneous spin configurations induce nutation in the
R. Bastardis, F. Vernay, H. Kachkachi
semanticscholar +1 more source
Accurate free and forced rotational motions of rigid Venus [PDF]
, 2010 % context :The precise and accurate modelling of a terrestrial planet like Venus is an exciting and challenging topic, all the more interesting since it can be compared with that of the Earth for which such a modelling has already been achieved at the ...
Carpenter +21 more
core +2 more sources
MathematicsIn view of the problems of the complex design, difficult machining, and high manufacturing cost of a traditional nutation reducer, this paper intends to design a nutation reducer and study its meshing performance.
Haoyu Chen, Qinghai Li, Chao Jia
doaj +1 more source
EVALUATION OF OUTER CORE VISCOSITY INFLUENCE ON THE EARTH FORCED NUTATION
Odessa Astronomical Publications, 2007 On the base of the combined method, consisting of the Sasao, Okubo, Saito (1980) approach with the iteration procedure, allowing couple finite element method with the solution of the Laplace equation, it have evaluated the influence of outer core ...
M. V. Lubkov
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Evaluation of the first three years of Vgos 24 h sessions using a Kalman filter with C5++
Earth, Planets and Space, 2023 We analyzed the first three years of VGOS 24 h sessions, and evaluated the performance in terms of Earth orientation parameters (EOP) and station positions.
Periklis-Konstantinos Diamantidis +1 more
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Photonics, 2023 The signal-receiving end of acquisition, pointing, and tracking (APT) systems applied to intersatellite laser communication terminals usually uses a fast-steering mirror (FSM) to control the fiber-coupling process, has a complex structural design, and ...
Bo Peng +6 more
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