Results 11 to 20 of about 402 (203)

Strong Gravitational Lensing and Microlensing of Supernovae. [PDF]

Space Sci Rev
AbstractStrong gravitational lensing and microlensing of supernovae (SNe) are emerging as a new probe of cosmology and astrophysics in recent years. We provide an overview of this nascent research field, starting with a summary of the first discoveries of strongly lensed SNe. We describe the use of the time delays between multiple SN images as a way to
Suyu SH, Goobar A, Collett T, More A, Vernardos G.   +4 more
europepmc   +4 more sources

Strong Gravitational Lensing with the SKA [PDF]

Proceedings of Advancing Astrophysics with the Square Kilometre Array — PoS(AASKA14), 2015
Strong gravitational lenses provide an important tool to measure masses in the distant Universe, thus testing models for galaxy formation and dark matter; to investigate structure at the Epoch of Reionization; and to measure the Hubble constant and possibly w as a function of redshift.
Mckean, J. P., Jackson, N., Vegetti, S., Rybak, M., Serjeant, S., Koopmans, L. V. E., METCALF, ROBERT BENTON, Fassnacht, C. D., Marshall, P. J., Pandey Pommier, M.   +9 more
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Strong gravitational lensing with SKA [PDF]

New Astronomy Reviews, 2004
The advent of new observational facilities in the last two decades has allowed the rapid discovery and high-resolution optical imaging of many strong lens systems from galaxy to cluster scales, as well as their spectroscopic follow-up. Radio telescopes have played the dominant role in the systematic detection of dozens of new arcsec-scale lens systems.
Koopmans, LVE, Browne, IWA, Jackson, NJ
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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.
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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
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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
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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
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Strong gravitational lensing by wormholes [PDF]

Journal of Cosmology and Astroparticle Physics, 2019
We study strong gravitational lensing by a class of static wormhole geometries. Analytical approaches to the same are developed, and the results differ substantially from strong lensing by black holes, first reported by Bozza. We consider two distinct situations, one in which the observer and the source are on the same side of the wormhole throat, and ...
Shaikh, Rajibul, Banerjee, Pritam, Paul, Suvankar, Sarkar, Tapobrata   +3 more
openaire   +2 more sources