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Caustic Skeleton & Cosmic Web [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2018
We present a general formalism for identifying the caustic structure of an evolving mass distribution in an arbitrary dimensional space. For the class of Hamiltonian fluids the identification corresponds to the classification of singularities in ...
Feldbrugge, Job   +3 more
core   +6 more sources

Dynamic caustics by ultrasonically modulated liquid surface [PDF]

open access: yesScientific Reports
This paper presents a method for generating dynamic caustic patterns by utilising dual-optimised holographic fields with Phased Array Transducer (PAT).
Koki Nagakura   +3 more
doaj   +2 more sources

Corrosive Esophageal Injury due to a Commercial Vinegar Beverage in an Adolescent [PDF]

open access: yesClinical Endoscopy, 2020
Although gastroesophageal damage is commonly induced by accidental drinking of a strong acid or alkali, damage due to the consumption of a vinegar beverage is not well known. We report a case of corrosive esophageal ulcer found in an adolescent consuming
Jiyeon Chang   +3 more
doaj   +1 more source

Flexible rotation of transverse optical field for 2D self-accelerating beams with a designated trajectory

open access: yesOpto-Electronic Advances, 2021
Self-accelerating beams have the unusual ability to remain diffraction-free while undergo the transverse shift during the free-space propagation. We theoretically identify that the transverse optical field distribution of 2D self-accelerating beam is ...
Lei Zhu   +5 more
doaj   +1 more source

Dark Matter Caustics [PDF]

open access: yesThe Identification of Dark Matter, 2000
Abstract: The late infall of cold dark matter onto an isolated galaxy such as our own produces flows with definite velocity vectors at any physical point in the galactic halo. It also produces caustics which are places where the dark matter density is very large. The outer caustics are topological spheres whereas the inner caustics are rings. The self‐
Sikivie, P., Kinney, W.
openaire   +3 more sources

Geoacoustic Estimation of the Seafloor Sound Speed Profile in Deep Passive Margin Setting Using Standard Multichannel Seismic Data

open access: yesJournal of Marine Science and Engineering, 2021
Seafloor geoacoustic properties are important in determining sound propagation in the marine environment, which broadly affects sub-sea activities. However, geoacoustic investigation of the deep seafloor, which is required by the recent expansion of deep-
Ernst Uzhansky   +6 more
doaj   +1 more source

Centre Symmetry Sets of Families of Plane Curves

open access: yesDemonstratio Mathematica, 2015
We study centre symmetry sets and equidistants for a I-parameter family of plane curves where, for a special member of the family, there exist two inflexions with parallel tangents.
Giblin Peter, Reeve Graham
doaj   +1 more source

Distribution of Caustic-Crossing Intervals for Galactic Binary-Lens Microlensing Events [PDF]

open access: yes, 1999
Detection of caustic crossings of binary-lens gravitational microlensing events is important because by detecting them one can obtain useful information both about the lens and source star.
Han, Cheongho   +2 more
core   +2 more sources

Differential optics for illumination design in the presence of caustics [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
Alternatively to using time-consuming Monte-Carlo simulations the irradiation at a target plane can also be calculated by differential optics methods. In the case of caustics, these methods yield to infinite irradiance and its results are not directly ...
Ott P., Yu L.
doaj   +1 more source

Properties of Central Caustics in Planetary Microlensing [PDF]

open access: yes, 2005
To maximize the number of planet detections, current microlensing follow-up observations are focusing on high-magnification events which have a higher chance of being perturbed by central caustics.
Asada H.   +16 more
core   +1 more source

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