Results 31 to 40 of about 786,932 (316)
Determination of Lens Mass Density Profile from Strongly Lensed Gravitational-wave Signals
The Astrophysical Journal, 2023 As the interferometers detecting gravitational waves are upgraded, improving their sensitivity, the probability of observing strong lensing increases. Once a detection is made, it will be critical to gain as much information as possible about the lensing
Mick Wright +2 more
doaj +1 more source
KiDS-1000 catalogue: Weak gravitational lensing shear measurements [PDF]
Astronomy & Astrophysics, 2020 We present weak lensing shear catalogues from the fourth data release of the Kilo-Degree Survey, KiDS-1000, spanning 1006 square degrees of deep and high-resolution imaging.
B. Giblin +21 more
semanticscholar +1 more source
Parameters estimation and strong gravitational lensing of nonsingular Kerr-Sen black holes [PDF]
, 2020 The recent time witnessed a surge of interest in strong gravitational lensing by black holes is due to the Event Horizon Telescope (EHT) results, which suggest comparing the black hole lensing in both general relativity and heterotic string theory.
Sushant G. Ghosh +2 more
semanticscholar +1 more source
Circular orbit of a particle and weak gravitational lensing [PDF]
Physical Review D, 2020 The purpose of this paper is twofold. First, we introduce a geometric approach to study the circular orbit of a particle in static and spherically symmetric spacetime based on Jacobi metric.
Zonghai Li, Guodong Zhang, A. Övgün
semanticscholar +1 more source
Gravitational Lensing by Spherical Lenses [PDF]
International Journal of Astronomy and Astrophysics, 2014 In this work we introduced a new proposal to study the gravitational lensing theory by spherical lenses, starting from its surface mass density $ (x)$ written in terms of a decreasing function $f$ of a dimensionless coordinate $x$ on the lens plane.
Roger Hurtado +2 more
openaire +4 more sources
A Highly Magnified Gravitationally Lensed Red QSO at z = 2.5 with a Significant Flux Ratio Anomaly
The Astrophysical Journal, 2023 We present the discovery of a gravitationally lensed dust-reddened QSO at z = 2.517, identified in a survey for QSOs by infrared selection. Hubble Space Telescope imaging reveals a quadruply lensed system in a cusp configuration, with a maximum image ...
Eilat Glikman +14 more
doaj +1 more source
Gravitational lensing by gravitational waves [PDF]
Gravitation and Cosmology, 2008 9 pages, 3 ...
O. Yu. Tsupko +4 more
openaire +3 more sources
Toward an Optimal Reconstruction of the Shear Field with PDF-folding
The Astrophysical Journal, 2023 Weak lensing provides a direct way of mapping the density distribution in the Universe. To reconstruct the density field from the shear catalog, an important step is to build the shear field from the shear catalog, which can be quite nontrivial due to ...
Haoran Wang +3 more
doaj +1 more source
Phase effects from strong gravitational lensing of gravitational waves [PDF]
Physical Review D, 2020 Assessing the probability that two or more gravitational wave (GW) events are lensed images of the same source requires an understanding of the properties of the lensed images.
J. Ezquiaga +4 more
semanticscholar +1 more source
Gravitational lensing by wormholes [PDF]
Physical Review D, 2006 Gravitational lensing by traversable Lorentzian wormholes is a ew possibility which is analyzed here in the strong field limit. Wormhole solutions are considered in the Einstein minimally coupled theory and in the brane world model. The observables in both the theories show significant differences from those arising in the Schwarzschild black hole ...
Alexander V. Zakharov +4 more
openaire +3 more sources