Results 21 to 30 of about 64,982 (304)

Observational Test of f(Q) Gravity with Weak Gravitational Lensing

open access: goldThe Astrophysical Journal
In 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 ...
Qingqing Wang   +4 more
doaj   +2 more sources

WEAK GRAVITATIONAL LENSING OF THE COSMIC MICROWAVE BACKGROUND REVISITED [PDF]

open access: greenThe Astrophysical Journal, 2009
In this paper, we revisit the weak gravitational lensing of CMB. The key point is that the deflection angle of CMB photon varies with the redshift. From this we obtain a set of modified power spectra. Compared with the ones calculated before, the temperature, the polarization E mode and the cross power spectra correction are of the order $0.01 ...
Bo Yu, Tan Lu
openalex   +5 more sources

Detection of the significant impact of source clustering on higher-order statistics with DES Year 3 weak gravitational lensing data [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2023
We measure the impact of source galaxy clustering on higher-order summary statistics of weak gravitational lensing data. By comparing simulated data with galaxies that either trace or do not trace the underlying density field, we show this effect can ...
M. Gatti   +100 more
semanticscholar   +1 more source

Weak gravitational lensing [PDF]

open access: green, 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.
Henk Hoekstra
openalex   +4 more sources

Weak gravitational lensing in dark matter and plasma mediums for wormhole-like static aether solution [PDF]

open access: yesThe European Physical Journal C, 2022
In this paper, we study the deflection angle for wormhole-like static aether solution by using Gibbons and Werner technique in non-plasma, plasma, and dark matter mediums.
W. Javed   +3 more
semanticscholar   +1 more source

Geometric Outlines of the Gravitational Lensing and Its Astronomic Applications

open access: yesUniverse, 2023
Gravitational lensing is a topic of great application value in the field of astronomy. The properties and research methods of gravitational lensing are closely related to the geometric and relativistic characteristics of the background universe.
Bin Shen, Mingyang Yu
doaj   +1 more source

KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints [PDF]

open access: yesAstronomy & Astrophysics, 2020
We present a joint cosmological analysis of weak gravitational lensing observations from the Kilo-Degree Survey (KiDS-1000), with redshift-space galaxy clustering observations from the Baryon Oscillation Spectroscopic Survey (BOSS) and galaxy-galaxy ...
C. Heymans   +30 more
semanticscholar   +1 more source

Charged black hole in 4D Einstein-Gauss-Bonnet gravity: particle motion, plasma effect on weak gravitational lensing and centre-of-mass energy [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2021
We study the motion of charged and spinning particles and photons in the 4D charged Einstein-Gauss-Bonnet (EGB) black hole vicinity. We determine the radius of the innermost stable circular orbit (ISCO) for test particles.
Farruh Atamurotov   +3 more
semanticscholar   +1 more source

Weak gravitational lensing [PDF]

open access: yesPhysics Reports, 2001
Invited and refereed contribution to ...
Matteo Maturi, Matthias Bartelmann
openaire   +6 more sources

Home - About - Disclaimer - Privacy