Results 11 to 20 of about 9,469 (260)
Holographic Einstein rings of non-commutative black holes
European Physical Journal C: Particles and FieldsWith the help of AdS/CFT correspondence, we derive the desired response function of QFT on the boundary of the non-commutative black hole. Using the virtual optical system with a convex lens, we obtain the Einstein rings of the black hole from the ...
Xin-Yun Hu +3 more
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Holographic Einstein ring in asymptotically safe gravity
European Physical Journal C: Particles and FieldsTo address the non-renormalizability issue of general relativity in the realm of quantum gravity, Weinberg first proposed the theory of asymptotically safe gravity.
De-Jiang Qi +3 more
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Engineering dark solitary waves in ring-trap Bose–Einstein condensates
New Journal of Physics, 2016 We demonstrate the feasibility of generation of quasi-stable counter-propagating solitonic structures in an atomic Bose–Einstein condensate confined in a realistic toroidal geometry, and identify optimal parameter regimes for their experimental ...
D Gallucci, N P Proukakis
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On multiple Einstein rings [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 A number of recent surveys for gravitational lenses have found examples of double Einstein rings. Here, we investigate analytically the occurrence of multiple Einstein rings. We prove, under very general assumptions, that at most one Einstein ring can arise from a mass distribution in a single plane lensing a single background source.
Werner, M. C. +2 more
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Einstein Rings in Holography [PDF]
Physical Review Letters, 2019 Clarifying conditions for the existence of a gravitational picture for a given quantum field theory (QFT) is one of the fundamental problems in the AdS/CFT correspondence. We propose a direct way to demonstrate the existence of the dual black holes: imaging an Einstein ring. We consider a response function of the thermal QFT on a two-dimensional sphere
Hashimoto, Koji +2 more
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The Canarias Einstein ring: a newly discovered optical Einstein ring [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2016 Abstract We report the discovery of an optical Einstein ring in the Sculptor constellation, IAC J010127-334319, in the vicinity of the Sculptor dwarf spheroidal galaxy. It is an almost complete ring (∼300°) with a diameter of ∼4.5 arcsec.
Bettinelli, Margherita +15 more
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Identifying Optical Einstein Rings [PDF]
Symposium - International Astronomical Union, 1996 The discovery of gravitationally lensed radio-rings (Hewitt et al. 1988) opened up a new line of attack on the problem of dark matter in galaxies. High–resolution radio observations (Langston et al. 1989) resolve structure tangentially and radially within the rings, providing sophisticated analysis routines (Kochanek & Narayan 1992, Wallington ...
S. J. Warren +5 more
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Hypersonic Bose–Einstein condensates in accelerator rings [PDF]
Nature, 2019 Some of the most sensitive and precise measurements to date are based on matterwave interferometry with freely falling atomic clouds. Examples include high-precision measurements of inertia, gravity and rotation. In order to achieve these very high sensitivities, the interrogation time has to be very long and consequently the experimental apparatus has
Pandey, Saurabh +7 more
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Cosmic Shear with Einstein Rings [PDF]
The Astrophysical Journal Letters, 2018 Abstract We explore a new technique to measure cosmic shear using Einstein rings. In Birrer et al., we showed that the detailed modeling of Einstein rings can be used to measure external shear to high precision. In this Letter, we explore how a collection of Einstein rings can be used as a statistical probe of cosmic shear.
Simon Birrer +2 more
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Einstein ring: weighing a star with light [PDF]
Physics Education, 2018 10 pages, 5 ...
Jorge Pinochet, Michael Van Sint Jan
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