Results 31 to 40 of about 95,116 (297)

A New Way to Explore Cosmological Tensions Using Gravitational Waves and Strong Gravitational Lensing [PDF]

Astrophysical Journal, 2021
In recent years, a crisis in the standard cosmology has been caused by inconsistencies in the measurements of some key cosmological parameters, the Hubble constant H 0 and cosmic curvature parameter Ω K , for example.
Mengran Cao, Jie Zheng, Jing Qi, Xin Zhang, Zong-hong Zhu   +4 more
semanticscholar   +1 more source

Strong gravitational lensing by Kerr and Kerr-Newman black holes [PDF]

Physical Review D, 2021
We study the strong gravitational lensing due to the Kerr black holes with angular momentum $a$ and the Kerr-Newman black holes with additional charge $Q$.
T. Hsieh, Da-Shin Lee, Chi-Yong Lin
semanticscholar   +1 more source

Identification of Galaxy–Galaxy Strong Lens Candidates in the DECam Local Volume Exploration Survey Using Machine Learning

The Astrophysical Journal, 2023
We perform a search for galaxy–galaxy strong lens systems using a convolutional neural network (CNN) applied to imaging data from the first public data release of the DECam Local Volume Exploration Survey, which contains ∼520 million astronomical sources
E. A. Zaborowski, A. Drlica-Wagner, F. Ashmead, J. F. Wu, R. Morgan, C. R. Bom, A. J. Shajib, S. Birrer, W. Cerny, E. J. Buckley-Geer, B. Mutlu-Pakdil, P. S. Ferguson, K. Glazebrook, S. J. Gonzalez Lozano, Y. Gordon, M. Martinez, V. Manwadkar, J. O’Donnell, J. Poh, A. Riley, J. D. Sakowska, L. Santana-Silva, B. X. Santiago, D. Sluse, C. Y. Tan, E. J. Tollerud, A. Verma, J. A. Carballo-Bello, Y. Choi, D. J. James, N. Kuropatkin, C. E. Martínez-Vázquez, D. L. Nidever, J. L. Nilo Castellon, N. E. D. Noël, K. A. G. Olsen, A. B. Pace, S. Mau, B. Yanny, A. Zenteno, T. M. C. Abbott, M. Aguena, O. Alves, F. Andrade-Oliveira, S. Bocquet, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, C. J. Conselice, M. Costanzi, M. E. S. Pereira, J. De Vicente, S. Desai, J. P. Dietrich, P. Doel, S. Everett, I. Ferrero, B. Flaugher, D. Friedel, J. Frieman, J. García-Bellido, D. Gruen, R. A. Gruendl, G. Gutierrez, S. R. Hinton, D. L. Hollowood, K. Honscheid, K. Kuehn, H. Lin, J. L. Marshall, P. Melchior, J. Mena-Fernández, F. Menanteau, R. Miquel, A. Palmese, F. Paz-Chinchón, A. Pieres, A. A. Plazas Malagón, J. Prat, M. Rodriguez-Monroy, A. K. Romer, E. Sanchez, V. Scarpine, I. Sevilla-Noarbe, M. Smith, E. Suchyta, C. To, N. Weaverdyck, DELVE & DES Collaborations   +91 more
doaj   +1 more source

Line-of-sight effects in strong gravitational lensing [PDF]

Journal of Cosmology and Astroparticle Physics, 2021
While most strong-gravitational-lensing systems may be roughly modelled by a single massive object between the source and the observer, in the details all the structures near the light path contribute to the observed images.
P. Fleury, J. Larena, J. Uzan
semanticscholar   +1 more source

On the detection and precise localisation of merging black holes events through strong gravitational lensing [PDF]

, 2022
To unlock the full spectrum of astrophysical and cosmological applications of gravitational-wave detections, it is essential to localise the associated black-hole mergers to high precision inside their host galaxies.
Ewoud Wempe, L. Koopmans, A. Wierda, O. Hannuksela, C. Broeck   +4 more
semanticscholar   +1 more source

Galaxy-scale Test of General Relativity with Strong Gravitational Lensing [PDF]

Astrophysical Journal, 2021
Although general relativity (GR) has been precisely tested at the solar system scale, precise tests at a galactic or cosmological scale are still relatively insufficient.
Xiaohong Liu, Zhenhua Li, Jing Qi, Xin Zhang   +3 more
semanticscholar   +1 more source

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

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
openaire   +5 more sources

deeplenstronomy: A dataset simulation package for strong gravitational lensing [PDF]

Journal of Open Source Software, 2021
Automated searches for strong gravitational lensing in optical imaging survey datasets often employ machine learning and deep learning approaches. These techniques require more example systems to train the algorithms than have presently been discovered ...
R. Morgan, B. Nord, S. Birrer, J. Lin, J. Poh   +4 more
semanticscholar   +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
openaire   +1 more source