Results 21 to 30 of about 9,469 (260)
Mass discrepancy–acceleration relation in Einstein rings [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 7 pages, 4 ...
Tian, Yong, Ko, Chung-Ming
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Beware the Nonuniqueness of Einstein Rings
The Astronomical Journal, 2001 To appear in AJ (circa Aug 2001)
Saha, Prasenjit, Williams, Liliya L. R.
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Spectroscopy of the optical Einstein ring 0047 - 2808 [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 We present optical and near-infrared spectroscopic observations of the optical Einstein ring 0047-2808. We detect both [OIII] lines 4959, 5007 near 2.3 micron, confirming the redshift of the lensed source as z=3.595. The Ly-a line is redshifted relative to the [OIII] line by 140+-20 km/s.
Warren, S. J. +3 more
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The Importance of Einstein Rings
The Astrophysical Journal, 2001 21 pages, 8 figures, submitted to the ...
Kochanek, C. S. +2 more
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Spatiotemporal vortex rings in atomic Bose–Einstein condensates [PDF]
Low Temperature Physics, 2019 We investigate spatiotemporal vortex rings with phase dislocation both in space and time. It is demonstrated that these structures naturally appear as a periodical in time edge phase dislocation at the low-density region of a perturbed atomic Bose–Einstein condensate. The condition of formation, dynamics and stability of the spatiotemporal vortex rings
Chelpanova, O. G. +3 more
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Vortices and ring solitons in Bose-Einstein condensates [PDF]
Physical Review A, 2006 The form and stability properties of axisymmetric and spherically symmetric stationary states in two and three dimensions, respectively, are elucidated for Bose-Einstein condensates. These states include the ground state, central vortices, and radial excitations of both.
Carr, L. D., Clark, Charles W.
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Vortex ring dynamics in trapped Bose-Einstein condensates [PDF]
Physical Review A, 2013 We use the time-dependent Gross-Pitaevskii equation to study the motion of a vortex ring produced by phase imprinting on an elongated cloud of cold atoms. Our approach models the experiments of Yefsah et. al. [Nature \textbf{499}, 426] on $^6$Li in the BEC regime where the fermions are tightly bound into bosonic dimers. We find ring oscillation periods
Reichl, Matthew D., Mueller, Erich J.
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Nuclear Physics BThis study, situated within the framework of the AdS/CFT correspondence, employs wave optics methods to investigate the Einstein ring structure of quantum-corrected AdS–Reissner–Nordström black holes governed by Euler–Heisenberg nonlinear electrodynamics.
Abhishek Baruah, Prabwal Phukon
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Nonlinear dynamics of a Bose-Einstein condensate excited by a vortex ring phase imprinting
Results in Physics, 2021 We study the nonlinear dynamics of a three-dimensional Bose-Einstein condensate (BEC) excited by a vortex ring phase imprinting. We identify independent, integrated, and stationary modes of the center-of-mass oscillation of the condensate with respect to
Wen-Kai Bai +4 more
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Dark–bright ring solitons in Bose–Einstein condensates [PDF]
Journal of Physics B: Atomic, Molecular and Optical Physics, 2011 We study dark-bright ring solitons in two-component Bose-Einstein condensates. In the limit of large densities of the dark component, we describe the soliton dynamics by means of an equation of motion for the ring radius. The presence of the bright, "filling" species is demonstrated to have a stabilizing effect on the ring dark soliton. Near the linear
Stockhofe, J. +3 more
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