Results 101 to 110 of about 64,982 (304)
The Ray Bundle method for calculating weak magnification by gravitational lenses [PDF]
, 1998 We present here an alternative method for calculating magnifications in gravitational lensing calculations -- the Ray Bundle method. We provide a detailed comparison between the distribution of magnifications obtained compared with analytic results and ...
C. J. Fluke +24 more
core +3 more sources
Light on dark matter with weak gravitational lensing [PDF]
IEEE Signal Processing Magazine, 2010 This paper reviews statistical methods recently developed to reconstruct and analyze dark matter mass maps from weak lensing observations. The field of weak lensing is motivated by the observations made in the last decades showing that the visible matter represents only about 4-5% of the Universe, the rest being dark.
A. Refregier +2 more
openaire +3 more sources
Advanced Science, EarlyView.A serrodyne‐modulated dual electro‐optic comb interferometer is presented that achieves sub‐nanometer precision in absolute distance measurements. The system also supports diverse applications such as depth imaging and vibration sensing. With features of low RF power, wide frequency‐shifting range, and full integration potential, the system offers a ...
Xiaoyang Guo +4 more
wiley +1 more source
A first constraint on the average mass of ultra-diffuse galaxies from weak gravitational lensing [PDF]
, 2017 The recent discovery of thousands of ultra diffuse galaxies (UDGs) in nearby galaxy clusters has opened a new window into the process of galaxy formation and evolution.
C. Sif'on +4 more
semanticscholar +1 more source
DePerio: Deep Learning‐Based Oral Inflammatory Load Quantification for Periodontal Applications
Advanced Intelligent Systems, EarlyView.a) Inflammation and oral polymorphonuclear neutrophil (oPMN) Migration: Dental plaque accumulation leads to inflammation, prompting white blood cells (WBCs), particularly oPMNs, to migrate from blood vessels through the gingival epithelium into the oral cavity.
Fatemeh Soheili +9 more
wiley +1 more source
The Open Journal of AstrophysicsThe apparent angular positions of quasars are deflected on the sky by the gravitational field sourced by foreground matter. This weak lensing effect is measurable through the distortions it introduces in the lensed quasar spectra.
Patrick Shaw +2 more
doaj +1 more source
ВЛИЯНИЕ ГРАВИТАЦИОННОГО ЛИНЗИРОВАНИЯ НА ФУНКЦИЮ СВЕТИМОСТИ КВАЗАРОВ
Odessa Astronomical Publications, 2011 The function of quasar distribution on apparent brightness is discussed. This function is found on base of suggestion that quasars, at least partly, are strong gravitational lensing images of the active nuclei of distant galaxies.
Ю. Л. Бухмастова
doaj +1 more source
Mapping dark matter on the celestial sphere with weak gravitational lensing [PDF]
, 2017 Convergence maps of the integrated matter distribution are a key science result from weak gravitational lensing surveys. To date, recovering convergence maps has been performed using a planar approximation of the celestial sphere.
C. Wallis +5 more
semanticscholar +1 more source
Particle dynamics and gravitational weak lensing around black hole in the Kalb-Ramond gravity
The European Physical Journal C, 2022 In this paper, we have studied the particle dynamics, gravitational lensing and energy processes around the black hole (BH) in Kalb–Ramond (KR) gravity.
Farruh Atamurotov +3 more
semanticscholar +1 more source
25 pagers, 14 figures. This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor C.
Prat, J., Bacon, D.
openaire +2 more sources