Andromeda’s Parachute: Time Delays and Hubble Constant
The Astrophysical Journal, 2023 The gravitational lens system PS J0147+4630 (Andromeda’s Parachute) consists of four quasar images ABCD and a lensing galaxy. We obtained r -band light curves of ABCD in the 2017−2022 period from monitoring with two 2 m class telescopes.
Vyacheslav N. Shalyapin +3 more
doaj +1 more source
The Strongest Cluster Lenses: An Analysis of the Relation between Strong Gravitational Lensing Strength and the Physical Properties of Galaxy Clusters [PDF]
, 2021 Strong gravitational lensing provides unique opportunities to investigate the mass distribution at the cores of galaxy clusters and to study high-redshift galaxies. Using 110 strong-lensing models of 74 cluster fields from the Hubble Frontier Fields (HFF)
C. Fox +3 more
semanticscholar +1 more source
Study of Errors in Strong Gravitational Lensing [PDF]
The Astrophysical Journal, 2008 We examine the accuracy of strong gravitational lensing determinations of the mass of galaxy clusters by comparing the conventional approach with the numerical integration of the fully relativistic null geodesic equations in the case of weak gravitational perturbations on Robertson-Walker metrics.
Kling, Thomas P., Frittelli, S.
openaire +4 more sources
Detecting low-mass haloes with strong gravitational lensing I: the effect of data quality and lensing configuration [PDF]
, 2021 This paper aims to quantify how the lowest halo mass that can be detected with galaxy-galaxy strong gravitational lensing depends on the quality of the observations and the characteristics of the observed lens systems.
G. Despali +7 more
semanticscholar +1 more source
Strong gravitational lensing by static black holes in effective quantum gravity [PDF]
The European Physical Journal CWe investigate strong gravitational lensing by two static black hole models (Model-1 and Model-2) within the Effective Quantum Gravity (EQG) framework, characterized by mass M and parameter $$\zeta $$
Yiyang Wang +4 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
Strong gravitational lensing of a 4-dimensional Einstein–Gauss–Bonnet black hole in homogeneous plasma [PDF]
International Journal of Modern Physics D, 2020 We investigate the strong gravitational lensing of spherically symmetric black holes in the novel Einstein–Gauss–Bonnet (EGB) gravity surrounded by unmagnetized plasma medium.
Xing-hua Jin, Yuan Gao, Dao-Jun Liu
semanticscholar +1 more source
Universe, 2023 In the present paper, strong deflection gravitational lensing is studied in a conformal gravity black hole. With the help of geometric optics limits, we have formulated the light cone conditions for the photons coupled to the Weyl tensor in a conformal ...
Ghulam Abbas +3 more
doaj +1 more source
Strong gravitational lensing by Schwarzschild black holes
Astrophysics, 2008 13 pages, 3 ...
Г. С. Бисноватый-Коган +1 more
openalex +6 more sources
Joint constraints on thermal relic dark matter from strong gravitational lensing, the Ly α forest, and Milky Way satellites [PDF]
Monthly notices of the Royal Astronomical Society, 2020 We derive joint constraints on the warm dark matter (WDM) half-mode scale by combining the analyses of a selection of astrophysical probes: strong gravitational lensing with extended sources, the Ly α forest, and the number of luminous satellites in ...
Wolfgang Enzi +12 more
semanticscholar +1 more source