Results 31 to 40 of about 32,756 (306)
Domain Adaptation for Simulation-based Dark Matter Searches with Strong Gravitational Lensing
The Astrophysical Journal, 2023 The identity of dark matter has remained surprisingly elusive. While terrestrial experiments may be able to nail down a model, an alternative method is to identify dark matter based on astrophysical or cosmological signatures.
Stephon Alexander +5 more
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Strong gravitational lensing by Schwarzschild black holes
Astrophysics, 2008 13 pages, 3 ...
Г. С. Бисноватый-Коган +1 more
openalex +6 more sources
Precision Modeling of JWST's First Cluster Lens SMACS J0723.3–7327
The Astrophysical Journal, 2023 Exploiting the fundamentally achromatic nature of gravitational lensing, we present a lens model for the massive galaxy cluster SMACS J0723.3−7323 (SMACS J0723; z = 0.388) that significantly improves upon earlier work.
Guillaume Mahler +14 more
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Two Lensed Star Candidates at z ≃ 4.8 behind the Galaxy Cluster MACS J0647.7+7015
The Astrophysical Journal Letters, 2023 We report the discovery of two extremely magnified lensed star candidates behind the galaxy cluster MACS J0647.7+015 using recent multiband James Webb Space Telescope (JWST) NIRCam observations. The star candidates are seen in a previously known, z _phot
Ashish Kumar Meena +28 more
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Effects of early dark energy on strong cluster lensing [PDF]
, 2006 We use the semi-analytic method developed by Fedeli et al. for computing strong-lensing optical depths to study the statistics of gravitational arcs in four dark-energy cosmologies. Specifically, we focus on models with early dark energy and compare them
Bartelmann +52 more
core +1 more source
The Astrophysical Journal, 2023 In this work, we adopt a cosmological model-independent approach for the first time to test the question of whether the mass density power-law index ( γ ) of strong gravitational lensing systems (SGLSs) evolves with redshift, and the joint light-curve ...
Jian Hu
doaj +1 more source
Strong gravitational lensing and dynamical dark energy [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 8 pages, 11 figures. Lensing map resolution improved and effects of resolution discussed. One more RP model analysed.
Andrea V. Macciò, Andrea V. Macciò
openaire +4 more sources
Observable properties of strong gravitational lenses [PDF]
Astronomy & Astrophysics, 2016 3 pages, 1 figure, matches published ...
openaire +3 more sources
Strong Gravitational Lensing and Galactic Bulges [PDF]
The Astrophysical Journal, 2003 13 pages, 2 figures, the shortened version was accepted by ApJ(Letters)
openaire +3 more sources
Gravitational lensing in the strong field limit [PDF]
Physical Review D, 2002 We provide an analytic method to discriminate among different types of black holes on the ground of their strong field gravitational lensing properties. We expand the deflection angle of the photon in the neighbourhood of complete capture, defining a strong field limit, in opposition to the standard weak field limit.
openaire +3 more sources