Gravitational lensing by a black-bounce-Reissner–Nordström spacetime
European Physical Journal C: Particles and Fields, 2022 We investigate the weak and strong deflection gravitational lensing by a black-bounce-Reissner–Nordström spacetime and obtain their lensing observables. Assuming the supermassive black holes in the Galactic Center and at the center of M87, Sgr A* and M87*
Jing Zhang, Yi Xie
doaj +1 more source
Weak gravitational lensing: A compact object with arbitrary quadrupole moment immersed in plasma [PDF]
Physical Review D, 2018 We study weak gravitational lensing around a quasi-Kerr black hole in the presence of plasma. The additional parameter $\epsilon$ regulating the quadrupole moment in the metric alters the deflection angle of light rays along with the plasma parameters ...
Hrishikesh Chakrabarty +3 more
semanticscholar +1 more source
Modeling the Impacts of Galaxy Intrinsic Alignments on Weak Lensing Peak Statistics
The Astrophysical JournalWeak gravitational lensing (WL) peak statistics capture cosmic nonlinear structures and can provide additional cosmological information complementary to cosmic shear two-point correlation analyses.
Tianyu Zhang +7 more
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Weak-lensing Approximation of Wave-optics Effects from General Symmetric Lens Profiles
The Astrophysical JournalGravitational lensing of electromagnetic (EM) waves has yielded many profound discoveries across fundamental physics, astronomy, astrophysics, and cosmology. Similar to EM waves, gravitational waves (GWs) can also be lensed.
Zhao-Feng Wu +3 more
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Power Spectrum Covariance of Weak Gravitational Lensing [PDF]
, 2000 Weak gravitational lensing observations probe the spectrum and evolution of density fluctuations and the cosmological parameters which govern them. At low redshifts, the non-linear gravitational evolution of large scale structure produces a non-Gaussian ...
Bernardeau F. +7 more
core +2 more sources
Probing black hole in Starobinsky-Bel-Robinson gravity with thermodynamical analysis, effective force and gravitational weak lensing [PDF]
Zhongguó wùli xuékanIn this work, we investigate the effects of plasma and the coupling parameter $\beta>0$, on the thermodynamic properties and weak gravitational lensing by the Schwarzschild-like black hole in the Starobinsky-Bel-Robinson gravity (SBRG).
G. Mustafa +5 more
semanticscholar +1 more source
Weak Lensing of the CMB: Extraction of Lensing Information from the Trispectrum [PDF]
, 2002 We discuss the four-point correlation function, or the trispectrum in Fourier space, of CMB temperature and polarization anisotropies due to the weak gravitational lensing effect by intervening large scale structure.
Asantha Cooray +68 more
core +2 more sources
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
Proceedings of the International School of Physics “Enrico Fermi”, 2013 Lecture given as part of the International School of Physics Enrico Fermi "New Horizons for Observational Cosmology", Varenna, July 1-6, 2013, eds. A. Melchiori, A. Cooray, E.
openaire +2 more sources
Cluster Lensing Mass Inversion (CLUMI+): Combining Dynamics and Weak Lensing around Galaxy Clusters
The Astrophysical JournalWe present clumi+ , a self-consistent, multiprobe methodology for reconstructing the mass distribution in and around galaxy clusters by combining gravitational lensing and dynamical observations. Building on the joint likelihood framework of K.
Keiichi Umetsu +3 more
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