Results 51 to 60 of about 186,042 (191)

Braneworld black holes [PDF]

, 2006
The braneworld paradigm provides an interesting framework within which to explore the possibility that our Universe lives in a fundamentally higher dimensional space- time.
Whisker, Richard
core  

Natural wormholes as gravitational lenses

Physical Review D, 1995
4 pages; plus 4 figures; ReV_TeX 3.0; DOE/ER/40537-001/NPL94-07-01]
Cramer, John G., Forward, Robert L., Morris, Michael S., Visser, Matt, Benford, Gregory, Landis, Geoffrey A.   +5 more
openaire   +3 more sources

A Novel Test for MOND: Gravitational Lensing by Disk Galaxies

The Astrophysical Journal
Disk galaxies represent a promising laboratory for the study of gravitational physics, including alternatives to dark matter (DM), owing to the possibility of coupling rotation curves’ dynamical data with strong gravitational lensing (SGL) observations ...
Christopher Harvey-Hawes, Marco Galoppo
doaj   +1 more source

Lensing Point-spread Function of Coherent Astrophysical Sources and Nontrivial Wave Effects

The Astrophysical Journal
Most research on astrophysical lensing has been conducted using the geometric optics framework, where there exists a clear concept of lensing images. However, wave optics effects can be important for coherent sources, e.g., pulsars, fast radio bursts ...
Xun Shi
doaj   +1 more source

DESI Strong Lens Foundry. IV. Spectroscopic Confirmation of DESI Lens Candidates with VLT/MUSE

The Astrophysical Journal Supplement Series
We present integral field spectroscopic observations of 76 strong gravitational lens candidates identified with a residual neural network in the DESI Legacy Imaging Surveys, obtained with the Multi Unit Spectroscopic Explorer (MUSE) on ESO’s Very Large ...
Emerald Lin, Ivonne Toro Bertolla, Aleksandar Cikota, Xiaosheng Huang, Christopher Storfer, Marcos Tamargo-Arizmendi, David J. Schlegel, William Sheu, Nao Suzuki   +8 more
doaj   +1 more source

Gravitational Lensing by Spherical Lenses

International Journal of Astronomy and Astrophysics, 2014
In this work we introduced a new proposal to study the gravitational lensing theory by spherical lenses, starting from its surface mass density $Σ(x)$ written in terms of a decreasing function $f$ of a dimensionless coordinate $x$ on the lens plane. The main result is the use of the function $f(x)$ to find directly the lens properties, at the same time
Hurtado, Roger, Castaneda, Leonardo, Tejeiro, Juan M.   +2 more
openaire   +3 more sources

Gravitational Lensing: Strong, Weak and Micro

, 2006
The theory, observations, and applications of gravitational lensing constitute one of the most rapidly growing branches of astrophysics. The gravitational deflection of light generated by mass concentrations along a light path produces magnification ...
Schneider, Peter, Kochanek, Christopher S, Wambsganss, Joachim   +2 more
core   +1 more source

Mimicking Symmetry‐Breaking Einstein Ring by Optical Lens

Advanced Photonics Research
The celebrated theory of general relativity has inspired research on optical simulations using artificial microstructures to mimic curved space–times.
Jun‐Liang Duan, Wen Xiao, Minyong Guo, Tong Liu, Huanyang Chen, Jin‐Hui Chen   +5 more
doaj   +1 more source

Gravitational lensing and rotation curve [PDF]

, 2010
Based on the geodesic equation in a static spherically symmetric metric we discuss the rotation curve and gravitational lensing. The rotation curve determines one function in the metric without assuming Einstein's equations. Then lensing is considered in
Bräunlich, Gerhard, Günter Scharf, Gerhard Bräunlich, Scharf, Günter   +3 more
core   +1 more source

Gravitational Lensing and Optical Geometry [PDF]

, 2020
The year 2019 saw the centenary of Eddington's eclipse expeditions and the corroboration of Einstein's general relativity by gravitational lensing. To mark the occasion, a Special Issue of Universe has been dedicated to the theoretical aspects of strong ...

core   +1 more source