Results 1 to 10 of about 14,504 (190)
Stability of active trapdoors in axisymmetry
Underground Space, 2022 Trapdoor stability has been widely studied by many researchers in the field of tunneling engineering. A general question being frequently asked is that why most sinkholes have a near-perfect circular shape on the ground surface.
Suraparb Keawsawasvong, Jim Shiau
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Departure from Axisymmetry in Planetary Nebulae [PDF]
The Astrophysical Journal, 2001 Many planetary nebulae (PNe) exhibit distinctly non-axisymmetric structure in either (i) the shape of the nebula, or (ii) in the off-centered position of the illuminating star.
Corradi R. L. M. +8 more
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Ultrarelativistic Bondi--Hoyle Accretion I: Axisymmetry [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 An ultrarelativistic relativistic study of axisymmetric Bondi--Hoyle accretion onto a moving Kerr black hole is presented. The equations of general relativistic hydrodynamics are solved using high resolution shock capturing methods.
A. J. Penner +26 more
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Critical Collapse of the Massless Scalar Field in Axisymmetry [PDF]
Physical Review D, 2002 We present results from a numerical study of critical gravitational collapse of axisymmetric distributions of massless scalar field energy. We find threshold behavior that can be described by the spherically symmetric critical solution with axisymmetric ...
Choptuik, M. W. +3 more
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Classification of Planetary Nebulae by their Departure from Axisymmetry [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 We propose a scheme to classify planetary nebulae (PNe) according to their departure from axisymmetric structure. We consider only departure along and near the equatorial plane, i.e., between the two sides perpendicular to the symmetry axis of the nebula.
Balick +48 more
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The role of non-axisymmetry of magnetic flux rope in constraining solar eruptions [PDF]
Nature Communications, 2021 The competition between different components of the Lorentz force defines whether a solar eruption fails or not. Here, the authors show a new Lorentz force component, which plays a major role in preventing magnetic flux ropes from erupting successfully.
Ze Zhong, Yang Guo, M. D. Ding
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The Astrophysical Journal, 2022 Most stellar-dynamical determinations of the masses of nearby supermassive black holes (SMBHs) have been obtained with the orbit superposition technique under the assumption of axisymmetry.
Matthew E. Quenneville +2 more
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Wave vector analysis methods using multi-point measurements [PDF]
Nonlinear Processes in Geophysics, 2010 Recent developments of multi-point measurements in space provide a means to analyze spacecraft data directly in the wave vector domain. For turbulence study this means that we are able to estimate energy, helicity, and higher order moments in the wave ...
Y. Narita +2 more
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Critical collapse of scalar fields beyond axisymmetry [PDF]
General Relativity and Gravitation, 2014 We investigate non-spherically symmetric, scalar field collapse of a family of initial data consisting of a spherically symmetric profile with a deformation proportional to the real part of the spherical harmonic $Y_{21}(θ,φ)$. Independent of the strength of the anisotropy in the data, we find that supercritical collapse yields a black hole mass ...
Healy, James, Laguna, Pablo
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Axisymmetry of critical points for the Onsager functional [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2021 A simple proof is given of the classical result (Fatkullin I, Slastikov V. 2005 Critical points of the Onsager functional on a sphere. Nonlinearity 18 , 2565–2580 ( doi:10.1088/0951-7715/18/6/008 ); Liu H et al.
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