Results 31 to 40 of about 42,790 (257)
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
Weak gravitational lensing Schwarzschild-MOG black hole in plasma
The European Physical Journal C, 2021 This paper is devoted to study weak gravitational lensing properties around black hole surrounded plasma medium in modified gravity (MOG). We have investigated the effects of the MOG-parametr and plasma medium on the deflection angle and total ...
Farruh Atamurotov +2 more
semanticscholar +1 more source
Scholarpedia, 2017 Invited and refereed contribution to ...
Matthias Bartelmann, Matteo Maturi
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Weak gravitational lensing by dark clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 We calculate the abundance of dark-matter concentrations that are sufficiently overdense to produce a detectable weak-gravitational-lensing signal. Most of these overdensities are virialized halos containing identifiable X-ray and/or optical clusters. However, a significant fraction are nonvirialized overdensities still in the process of gravitational ...
Weinberg, Nevin N., Kamionkowski, Marc
openaire +3 more sources
Nulling tomography with weak gravitational lensing [PDF]
Physical Review D, 2005 We explore several strategies of eliminating (or nulling) the small-scale information in weak lensing convergence power spectrum measurements in order to protect against undesirable effects, for example the effects of baryonic cooling and pressure forces on the distribution of large-scale structures. We selectively throw out the small-scale information
Huterer, Dragan, White, Martin
openaire +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
Observational Test of f(Q) Gravity with Weak Gravitational Lensing [PDF]
Astrophysical JournalIn this article we confront a class of f(Q) gravity models with observational data of galaxy–galaxy lensing. Specifically, we consider f(Q) gravity models containing a small quadratic correction when compared with general relativity (GR), and quantify ...
Qing-qing Wang +4 more
semanticscholar +1 more source
Combined strong and weak gravitational lensing mass measurements in clusters of galaxies [PDF]
, 2022 Gravitational lensing in clusters of galaxies is one of the most powerful methods to probe the dark matter mass distribution inside such systems, after mapping the baryonic component, and test the currently accepted ΛCDM cosmological paradigm.
Abriola D.
core +1 more source
, 2020 In this presentation I review cosmological measurements with weak gravitational lensing using the cosmic shear technique. An intriguing tension in the parameter S8=sigma8*sqrt(Omega_m/0.3) between low-z large-scale-structure probes and the Planck primary CMB probes has been observed. This is reminiscent of the well-known H0 tension, albeit currently at
Daniel Gruen +2 more
openaire +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.
Sandrine Pires +2 more
openaire +2 more sources