Results 1 to 10 of about 32,756 (306)

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.
Amara, Adam, Cox, Thomas J., Metcalf, R. Benton, Ostriker, Jeremiah P.   +3 more
core   +6 more sources

Strong Gravitational Lensing of Gravitational Waves: A Review

Universe, 2023
The first successful detection of gravitational waves (GWs) opened up a new window to study a realm of the most violent phenomena in the universe, such as coalescences of binary black holes (BH–BH), binary neutron stars (NS–NS), and mixed (BH–NS) systems,
Margherita Grespan, Marek Biesiada
doaj   +2 more sources

Relationship between High-Energy Absorption Cross Section and Strong Gravitational Lensing for Black Hole [PDF]

, 2011
In this paper, we obtain a relation between the high-energy absorption cross section and the strong gravitational lensing for a static and spherically symmetric black hole. It provides us a possible way to measure the high-energy absorption cross section
A. A. Starobinsky, C. W. Misner, Heng Guo, K. S. Virbhadra, Shao-Wen Wei, Yu-Xiao Liu   +5 more
core   +2 more sources

Gravitational lensing around Kehagias–Sfetsos compact objects surrounded by plasma

European Physical Journal C: Particles and Fields, 2019
We study the optical properties of the Kehagias–Sfetsos (KS) compact objects, characterized by the “Hořava” parameter $$\omega _{_{KS}}$$ ωKS , in the presence of plasma, considering its homogeneous or power-law density distribution.
Sudipta Hensh, Ahmadjon Abdujabbarov, Jan Schee, Zdeněk Stuchlík   +3 more
doaj   +3 more sources

Geometric Outlines of the Gravitational Lensing and Its Astronomic Applications

Universe, 2023
Gravitational lensing is a topic of great application value in the field of astronomy. The properties and research methods of gravitational lensing are closely related to the geometric and relativistic characteristics of the background universe.
Bin Shen, Mingyang Yu
doaj   +1 more source

Gravitational Lensing of Acoustic Charged Black Holes

The Astrophysical Journal, 2023
We study the gravitational lensing of acoustic charged black holes in strong and weak field limit approximations. For this purpose, we first numerically obtain the deflection limit coefficients and deflection angle in the strong field limit.
Niyaz Uddin Molla, Ujjal Debnath
doaj   +1 more source

A Highly Magnified Gravitationally Lensed Red QSO at z = 2.5 with a Significant Flux Ratio Anomaly

The Astrophysical Journal, 2023
We present the discovery of a gravitationally lensed dust-reddened QSO at z = 2.517, identified in a survey for QSOs by infrared selection. Hubble Space Telescope imaging reveals a quadruply lensed system in a cusp configuration, with a maximum image ...
Eilat Glikman, Cristian E. Rusu, Geoff C.-F. Chen, James Hung-Hsu Chan, Cristiana Spingola, Hannah Stacey, John McKean, Ciprian T. Berghea, S. G. Djorgovski, Matthew J. Graham, Daniel Stern, Tanya Urrutia, Mark Lacy, Nathan J. Secrest, John M. O’Meara   +14 more
doaj   +1 more source

Determination of Lens Mass Density Profile from Strongly Lensed Gravitational-wave Signals

The Astrophysical Journal, 2023
As the interferometers detecting gravitational waves are upgraded, improving their sensitivity, the probability of observing strong lensing increases. Once a detection is made, it will be critical to gain as much information as possible about the lensing
Mick Wright, Justin Janquart, Martin Hendry   +2 more
doaj   +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

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