Results 41 to 50 of about 186,042 (191)

A deconstruction of methods to derive one-point lensing statistics

open access: yesThe Open Journal of Astrophysics
Gravitational lensing is a crucial tool for exploring cosmic phenomena, providing insights into galaxy clustering, dark matter, and dark energy. Given the substantial computational demands of $N$-body simulations, approximate methods like $\texttt ...
Viviane Alfradique   +5 more
doaj   +1 more source

Resource Letter: Gravitational Lensing

open access: yes, 2012
This Resource Letter provides a guide to a selection of the literature on gravitational lensing and its applications. Journal articles, books, popular articles, and websites are cited for the following topics: foundations of gravitational lensing ...
Philip J. Marshall   +2 more
core   +1 more source

Gravitational Lensing by Vector Perturbations [PDF]

open access: yes, 2022
Perturbation theory is a useful tool used in cosmology to describe fluctuations in an almost-uniform universe. We focus on vector-type perturbations, and investigate their gravitational lensing effects.
Renzini, Arianna
core  

Gravitational Lensing [PDF]

open access: yesAIP Conference Proceedings, 2009
Gravitational lensing of the cosmic microwave background by large‐scale structure in the late universe is both a source of cosmological information and a potential contaminant of primordial gravity waves. Because lensing imprints growth of structure in the late universe on the CMB, measurements of CMB lensing will constrain parameters to which the CMB ...
Kendrick M. Smith   +22 more
openaire   +2 more sources

Stellar prospects for FRB gravitational lensing [PDF]

open access: yes, 2022
Gravitational lensing of fast radio bursts (FRBs) offers an exciting avenue for several cosmological applications. However, it is not yet clear how many such events future surveys will detect nor how to optimally find them. We use the known properties of
Ravi, Vikram   +3 more
core   +1 more source

An Exact Reduced-shear Relation from Radio Polarization and Galactic Image

open access: yesThe Astrophysical Journal
J. Francfort et al. and Y. Yoon et al. derived an approximate formula for gravitational lensing analysis when both radio wave polarization data and galaxy images are available, exploiting the fact that gravitational lensing does not rotate the ...
Youngsub Yoon
doaj   +1 more source

Evolving Morphology of Resolved Stellar Einstein Rings

open access: yesThe Astrophysical Journal, 2023
We consider strong gravitational lensing by nearby stars. Using our wave-optical treatment of lensing phenomena, we study Einstein rings that may form around nearby stellar lenses.
Slava G. Turyshev, Viktor T. Toth
doaj   +1 more source

Euclid Quick Data Release (Q1)

open access: yesAstronomy & Astrophysics
We present the first catalogue of strong-lensing galaxy clusters identified in the Euclid Quick Release 1 observations (covering 63.1 deg2). This catalogue is the result of the visual inspection of 1260 Euclid image cutouts of previously identified ...
Bergamini P.   +376 more
doaj   +1 more source

ВЛИЯНИЕ ГРАВИТАЦИОННОГО ЛИНЗИРОВАНИЯ НА ФУНКЦИЮ СВЕТИМОСТИ КВАЗАРОВ

open access: yesOdessa Astronomical Publications, 2011
The function of quasar distribution on apparent brightness is discussed. This function is found on base of suggestion that quasars, at least partly, are strong gravitational lensing images of the active nuclei of distant galaxies.
Ю. Л. Бухмастова
doaj   +1 more source

Editorial of Modified Theories of Gravity and Cosmological Applications

open access: yesUniverse, 2022
General Relativity is a theory of gravity that describes some of the effects of gravity with high accuracy, such as solar system tests, gravitational lensing, gravitational waves, black holes, deflection angle, etc [...]
Panayiotis Stavrinos, Emmanuel Saridakis
doaj   +1 more source

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