Results 1 to 10 of about 754 (117)

Stability of active trapdoors in axisymmetry

open access: yesUnderground Space (China), 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
exaly   +3 more sources

The role of non-axisymmetry of magnetic flux rope in constraining solar eruptions [PDF]

open access: yesNature 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
doaj   +2 more sources

Triaxial Orbit-based Dynamical Modeling of Galaxies with Supermassive Black Holes and an Application to Massive Elliptical Galaxy NGC 1453

open access: yesThe 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
doaj   +1 more source

Wave vector analysis methods using multi-point measurements [PDF]

open access: yesNonlinear 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
doaj   +1 more source

Cuspy and fractured black hole shadows in a toy model with axisymmetry

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Cuspy shadow was first reported for hairy rotating black holes, whose metrics deviate significantly from the Kerr one. The non-smooth edge of the shadow is attributed to a transition between different branches of unstable but bounded orbits, known as the
Wei-Liang Qian   +4 more
doaj   +1 more source

The proposition of analytical expression HM�(vP/S) in microindentation pile-up deformation mode

open access: yesFracture and Structural Integrity, 2022
In this article, the characteristic curves of microindentation measured on Cu99 were analyzed on the basis of the analytical expression proposed by Habibi et al. (J. Mater. Res, 2021, 36 (15): 3074-3085). The ratio of applied load to square displacement,
D.-E. Semsoum�   +3 more
doaj   +1 more source

Center-Symmetrical Object Detection Based on Gabor Wavelets

open access: yesIEEE Access, 2020
Symmetry is an important visual characteristic in the image and can be used to identify real-world objects based on their geometrically balanced structures.
Yi Zhang   +3 more
doaj   +1 more source

Black ripples, flowers and dumbbells at large D

open access: yesJournal of High Energy Physics, 2020
We explore the rich phase space of singly spinning (both neutral and charged) black hole solutions in the large D limit. We find several ‘bumpy’ branches which are connected to multiple (concentric) black rings, and black Saturns. Additionally, we obtain
David Licht, Raimon Luna, Ryotaku Suzuki
doaj   +1 more source

Phase diagram of solitons in the polar phase of a spin-1 Bose-Einstein condensate

open access: yesPhysical Review Research, 2020
We theoretically study the structure of a stationary soliton in the polar phase of spin-1 Bose–Einstein condensate in the presence of quadratic Zeeman effect at zero temperature.
I-Kang Liu   +2 more
doaj   +1 more source

Recipe for a Saturn‐Like Dynamo

open access: yesAGU Advances, 2021
The Cassini Grand Finale orbits provided detailed observations of Saturn’s internal magnetic field. Unique characteristics of the observed field, such as its axisymmetry and power spectrum, provide constraints on dynamo processes deep in Saturn’s ...
C. Yan, S. Stanley
doaj   +1 more source

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