Results 21 to 30 of about 757 (229)

DESI-253.2534+26.8843: A New Einstein Cross Spectroscopically Confirmed with Very Large Telescope/MUSE and Modeled with GIGA-Lens

The Astrophysical Journal Letters, 2023
Gravitational lensing provides unique insights into astrophysics and cosmology, including the determination of galaxy mass profiles and constraining cosmological parameters.
Aleksandar Cikota, Ivonne Toro Bertolla, Xiaosheng Huang, Saul Baltasar, Nicolas Ratier-Werbin, William Sheu, Christopher Storfer, Nao Suzuki, David J. Schlegel, Regis Cartier, Simon Torres, Stefan Cikota, Eric Jullo   +12 more
doaj   +1 more source

Erratum: Strong gravitational lensing by wormholes

Journal of Cosmology and Astroparticle Physics, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shaikh, Rajibul, Banerjee, Pritam, Paul, Suvankar, Sarkar, Tapobrata   +3 more
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Study of Errors in Strong Gravitational Lensing [PDF]

The Astrophysical Journal, 2008
We examine the accuracy of strong gravitational lensing determinations of the mass of galaxy clusters by comparing the conventional approach with the numerical integration of the fully relativistic null geodesic equations in the case of weak gravitational perturbations on Robertson-Walker metrics.
Kling, Thomas P., Frittelli, S.
openaire   +3 more sources

Detecting strong gravitational lensing of gravitational waves with TianQin

Physical Review D, 2023
When gravitational waves (GWs) pass by a massive object on its way to Earth, a strong gravitational lensing effect will happen. Thus, the GW signal will be amplified, deflected, and delayed in time. Through analyzing the lensed GW waveform, physical properties of the lens can be inferred. On the other hand, neglecting lensing effects in the analysis of
Xin-yi Lin, Jian-dong Zhang, Liang Dai, Shun-Jia Huang, Jianwei Mei   +4 more
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Simulations of strong gravitational lensing with substructure [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
Galactic sized gravitational lenses are simulated by combining a cosmological N-body simulation and models for the baryonic component of the galaxy. The lens caustics, critical curves, image locations and magnification ratios are calculated by ray-shooting on an adaptive grid.
Amara, Adam, METCALF, ROBERT BENTON, Cox, Thomas J., Ostriker, Jeremiah P.   +3 more
openaire   +3 more sources

Detecting and Characterizing Young Quasars. III. The Impact of Gravitational Lensing Magnification

The Astrophysical Journal, 2023
We test the impact of gravitational lensing on the lifetime estimates of seven high-redshift quasars at redshift z ≳ 6. The targeted quasars are identified by their small observed proximity zone sizes, which indicate extremely short quasar lifetimes ( t ...
Minghao Yue, Anna-Christina Eilers, Robert A. Simcoe, Sirio Belli, Frederick B. Davies, David DePalma, Joseph F. Hennawi, Charlotte A. Mason, Julian B. Muñoz, Erica J. Nelson, Sandro Tacchella   +10 more
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Strong Lensing of Gravitational Waves as Seen by LISA [PDF]

Physical Review Letters, 2010
We discuss strong gravitational lensing of gravitational waves from merging of massive black hole binaries in the context of the LISA mission. Detection of multiple events would provide invaluable information on competing theories of gravity, evolution and formation of structures and, with complementary observations, constraints on H_0 and other ...
Sereno, M., Sesana, A., Bleuler, A., Jetzer, Ph., Volonteri, M., Begelman, M. C.   +5 more
openaire   +3 more sources

PyAutoLens: Open-Source Strong Gravitational Lensing [PDF]

Journal of Open Source Software, 2021
Strong gravitational lensing, which can make a background source galaxy appears multiple times due to its light rays being deflected by the mass of one or more foreground lens galaxies, provides astronomers with a powerful tool to study dark matter, cosmology and the most distant Universe.
James. Nightingale, Richard Hayes, Ashley Kelly, Aristeidis Amvrosiadis, Amy Etherington, Qiuhan He, Nan Li, XiaoYue Cao, Jonathan Frawley, Shaun Cole, Andrea Enia, Carlos Frenk, David Harvey, Ran Li, Richard Massey, Mattia Negrello, Andrew Robertson   +16 more
openaire   +3 more sources

DeepZipper. II. Searching for Lensed Supernovae in Dark Energy Survey Data with Deep Learning

The Astrophysical Journal, 2023
Gravitationally lensed supernovae (LSNe) are important probes of cosmic expansion, but they remain rare and difficult to find. Current cosmic surveys likely contain 5–10 LSNe in total while next-generation experiments are expected to contain several ...
R. Morgan, B. Nord, K. Bechtol, A. Möller, W. G. Hartley, S. Birrer, S. J. González, M. Martinez, R. A. Gruendl, E. J. Buckley-Geer, A. J. Shajib, A. Carnero Rosell, C. Lidman, T. Collett, T. M. C. Abbott, M. Aguena, F. Andrade-Oliveira, J. Annis, D. Bacon, S. Bocquet, D. Brooks, D. L. Burke, M. Carrasco Kind, J. Carretero, F. J. Castander, C. Conselice, L. N. da Costa, M. Costanzi, J. De Vicente, S. Desai, P. Doel, S. Everett, I. Ferrero, B. Flaugher, D. Friedel, J. Frieman, J. García-Bellido, E. Gaztanaga, D. Gruen, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, K. Kuehn, N. Kuropatkin, O. Lahav, M. Lima, F. Menanteau, R. Miquel, A. Palmese, F. Paz-Chinchón, M. E. S. Pereira, A. Pieres, A. A. Plazas Malagón, J. Prat, M. Rodriguez-Monroy, A. K. Romer, A. Roodman, E. Sanchez, V. Scarpine, I. Sevilla-Noarbe, M. Smith, E. Suchyta, M. E. C. Swanson, G. Tarle, D. Thomas, T. N. Varga   +66 more
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Andromeda’s Parachute: Time Delays and Hubble Constant

The Astrophysical Journal, 2023
The gravitational lens system PS J0147+4630 (Andromeda’s Parachute) consists of four quasar images ABCD and a lensing galaxy. We obtained r -band light curves of ABCD in the 2017−2022 period from monitoring with two 2 m class telescopes.
Vyacheslav N. Shalyapin, Luis J. Goicoechea, Karianne Dyrland, Håkon Dahle   +3 more
doaj   +1 more source