Results 41 to 50 of about 18,556 (174)
Signs of the cusps in binary lenses [PDF]
, 2000 The cusps of the caustics of any gravitational lens model can be classified into positive and negative ones. This distinction lies on the parity of the images involved in the creation/destruction of pairs occurring when a source crosses a caustic in a ...
Bozza, Valerio
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Quantum caustics in the Gaussian slit experiment
, 1998 We study classical and quantum caustics for system with quadratic Lagrangian. Gaussian slit experiment is examined and it is pointed out that the focusing around caustics is stabilized against initial momentum fluctuations by quantum effect.Comment: TeX,
Berry +22 more
core +2 more sources
The caustic ring singularity [PDF]
, 1999 I investigate the caustics produced by the fall of collisionless dark matter in and out of a galaxy in the limit of negligible velocity dispersion. The outer caustics are spherical shells enveloping the galaxy. The inner caustics are rings.
A. A. Klypin +18 more
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The weakly perturbed Schwarzschild lens in the strong deflection limit
, 2006 We investigate the strong deflection limit of gravitational lensing by a Schwarzschild black hole embedded in an external gravitational field. The study of this model, analogous to the Chang & Refsdal lens in the weak deflection limit, is important to ...
C. Darwin +5 more
core +1 more source
Signatures of galactic magnetic lensing upon ultra high energy cosmic rays [PDF]
, 2000 We analyse several implications of lensing by the regular component of the galactic magnetic field upon the observed properties of ultra high energy cosmic rays.
Harari, Diego +2 more
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Caustic avoidance in Horava-Lifshitz gravity
, 2009 There are at least four versions of Horava-Lishitz gravity in the literature. We consider the version without the detailed balance condition with the projectability condition and address one aspect of the theory: avoidance of caustics for constant time ...
A. Ghodsi +51 more
core +3 more sources
Kerr black hole lensing for generic observers in the strong deflection limit [PDF]
, 2006 We generalize our previous work on gravitational lensing by a Kerr black hole in the strong deflection limit, removing the restriction to observers on the equatorial plane.
C. Darwin +7 more
core +2 more sources
Spectral Caustics in Attosecond Science
EPJ Web of Conferences, 2013 A unique type of singularity common in wave phenomena, known as caustics, links processes observed in many different branches of physics [1]. We investigate the role of caustics in attosecond science and in particular the physical process behind high ...
Dudovich N. +3 more
doaj +1 more source
Universality in the distribution of caustics in the expanding Universe
, 2003 We numerically investigate the long--time evolution of density perturbations after the first appearance of caustics in an expanding cosmological model with one--dimensional `single--wave' initial conditions.
Arnol’d V. I. +10 more
core +1 more source
On geodesic envelopes and caustics [PDF]
, 2005 We give a global description of envelopes of geodesic tangents of regular curves in (not necessarily convex) Riemannian surfaces. We prove that such an envelope is the union of the curve itself, its inflectional geodesics and its tangential caustics ...
Capitanio, Gianmarco
core +2 more sources