Results 31 to 40 of about 33,060 (268)
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 and Galactic Bulges [PDF]
The Astrophysical Journal, 2003 13 pages, 2 figures, the shortened version was accepted by ApJ(Letters)
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Image Simulations for Strong and Weak Gravitational Lensing [PDF]
Symmetry, 2020 Gravitational lensing has been identified as a powerful tool to address fundamental problems in astrophysics at different scales, ranging from exoplanet identification to dark energy and dark matter characterization in cosmology. Image simulations have played a fundamental role in the realization of the full potential of gravitational lensing by ...
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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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Strong gravitational lensing of explosive transients [PDF]
Reports on Progress in Physics, 2019 Abstract Recent rapid progress in time domain surveys makes it possible to detect various types of explosive transients in the Universe in large numbers, some of which will be gravitationally lensed into multiple images. Although a large number of strongly lensed distant galaxies and quasars have already been discovered, strong ...
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THE EFFECT OF ENVIRONMENT ON SHEAR IN STRONG GRAVITATIONAL LENSES [PDF]
The Astrophysical Journal, 2010 Accepted for publication in The Astrophysical Journal; 28 pages, 9 figures, 5 ...
Wong, Kenneth C. +4 more
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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
Light deflection by Damour-Solodukhin wormholes and Gauss-Bonnet theorem
, 2018 In this paper, using the recent method proposed by Ono, Ishihara and Asada (OIA) who extend the idea of Gibbons and Werner to the stationary and axisymmetric case, we apply the Gauss-Bonnet theorem to the optical metric of the non-rotating and rotating ...
Övgün, Ali
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Searching for Strong Gravitational Lenses
Space Science ReviewsAbstractStrong gravitational lenses provide unique laboratories for cosmological and astrophysical investigations, but they must first be discovered – a task that can be met with significant contamination by other astrophysical objects and asterisms.
Cameron Lemon +11 more
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Strong field gravitational lensing in scalar tensor theories
, 2006 Strong field gravitational lensing in the Brans-Dicke theory has been studied. The deflection angle for photons passing very close to the photon sphere is estimated for the static spherically symmetric space-time of the theory and the position and ...
Arunava Bhadra +17 more
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