Results 81 to 90 of about 65,765 (275)
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
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
Measuring Bending Rigidity and Compression Resistance in Pickering Layers
European Journal of Lipid Science and Technology, EarlyView.This graphical abstract presents the mechanical response of Pickering layers of polystyrene beads (PBs) and clay particles (CPs) under compression. PBs exhibit buckling at 40–70 mN/m, whereas CPs show no buckling. Experimental force–compression curves highlight distinct deformation behaviors, and deviations in bending rigidity emphasize interparticle ...
Negar Azizi +4 more
wiley +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
The International Journal of Health Planning and Management, EarlyView.ABSTRACT Gaza's health system has been devastated by a confluence of political determinants that long predated the 2023–25 Israeli military assault and were dramatically intensified during it. Using historical, political economy, ethical, and health systems lenses, this article argues that settler colonialism, military occupation, and a protracted ...
Bilal Irfan +19 more
wiley +1 more source
A deconstruction of methods to derive one-point lensing statistics
The Open Journal of AstrophysicsGravitational lensing is a crucial tool for exploring cosmic phenomena, providing insights into galaxy clustering, dark matter, and dark energy. Given the substantial computational demands of $N$-body simulations, approximate methods like $\texttt ...
Viviane Alfradique +5 more
doaj +1 more source
Weak lensing of large scale structure in the presence of screening
, 2015 A number of alternatives to general relativity exhibit gravitational screening in the non-linear regime of structure formation. We describe a set of algorithms that can produce weak lensing maps of large scale structure in such theories and can be used ...
Ferreira, Pedro G. +4 more
core +3 more sources
Weak gravitational lensing and shadow cast by rotating black holes in axionic Chern–Simons theory [PDF]
Physics of the Dark Universe, 2023 N. Parbin +2 more
semanticscholar +1 more source
KiDS-i-800: Comparing weak gravitational lensing measurements from same-sky surveys [PDF]
, 2017 We present a weak gravitational lensing analysis of 815 deg of i-band imaging from the Kilo-Degree Survey (KiDS-i-800). In contrast to the deep r-band observations, which take priority during excellent seeing conditions and form the primary KiDS data set
A. Amon +24 more
semanticscholar +1 more source
Executive Function and Entrepreneurial Opportunity Exploitation Under Risk and Uncertainty
Strategic Change, EarlyView.ABSTRACT This study examines how executive functions shape entrepreneurial opportunity exploitation under different knowledge environments. Drawing on Knight's distinction between risk and uncertainty, we conducted a vignette experiment with 200 working adults.
Ipek Koparan +3 more
wiley +1 more source