Results 1 to 10 of about 2,953 (244)

The gravitational bending of acoustic Schwarzschild black hole [PDF]

European Physical Journal C: Particles and Fields, 2023
Acoustic black hole is becoming an attractive topic in recent years, for it open-up new direction for experimental/observational explorations of black holes.
Chen-Kai Qiao, Mi Zhou
doaj   +2 more sources

Weak Gravitational Lensing [PDF]

Proceedings of Frontiers of Fundamental Physics 14 — PoS(FFP14), 2008
In this brief review I consider the advances made in weak gravitational lensing over the last 8 years, concentrating on the large scales - cosmic shear. I outline the theoretical developments, observational status, and the challenges which cosmic shear must overcome to realise its full potential. Finally I consider the prospects for probing Dark Energy
Heavens, A, A. Heavens
openaire   +6 more sources

Peaks in weak lensing mass maps for cluster astrophysics and cosmology [PDF]

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
Clusters of galaxies can be identified from the peaks in weak lensing aperture mass maps constructed from weak lensing shear catalogs. Such purely gravitational cluster selection differs considerably from traditional cluster selection based on the ...
Masamune OGURI, Satoshi MIYAZAKI
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Weak Gravitational Lensing of Finite Beams [PDF]

Physical Review Letters, 2017
The standard theory of weak gravitational lensing relies on the infinitesimal light beam approximation. In this context, images are distorted by convergence and shear, the respective sources of which unphysically depend on the resolution of the distribution of matter---the so-called Ricci-Weyl problem.
Fleury, Pierre, Larena, Julien, Uzan, Jean-Philippe   +2 more
openaire   +6 more sources

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 ...
Andrés A. Plazas
openaire   +3 more sources

Instrumental systematics and weak gravitational lensing [PDF]

Journal of Instrumentation, 2015
We present a pedagogical review of the weak gravitational lensing measurement process and its connection to major scientific questions such as dark matter and dark energy. Then we describe common ways of parametrizing systematic errors and understanding how they affect weak lensing measurements.
Rachel Mandelbaum (3892837)
openaire   +3 more sources

Gravitational Lensing: Strong, Weak and Micro [PDF]

, 2006
The theory, observations, and applications of gravitational lensing constitute one of the most rapidly growing branches of astrophysics. The gravitational deflection of light generated by mass concentrations along a light path produces magnification ...
Peter Schneider, Christopher S. Kochanek, Joachim Wambsganss   +2 more
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Weak gravitational lensing cross-correlations

, 2017
The matter content of the Universe is dominated by dark matter. Beyond its abundance and its lack of non-gravitational interactions with standard model matter, little is known about the nature of dark matter. This thesis attempts to illuminate different aspects of dark matter by using gravitational lensing in conjunction with other cosmological probes.
Tröster, Tilman
openaire   +2 more sources

Testing gravitational physics by combining DESI DR1 and weak lensing datasets using the E_G estimator

The Open Journal of Astrophysics
The action of gravitational physics across space-time creates observable signatures in the behaviour of light and matter. We perform combined-probe studies using data from the Baryon Oscillation Spectroscopic Survey (BOSS) and Dark Energy Spectroscopic ...
S. J. Rauhut, Chris Blake, U. Andrade, H. E. Noriega, J. Aguilar, S. Ahlen, S. BenZvi, D. Bianchi, D. Brooks, T. Claybaugh, A. Cuceu, A. de la Macorra, J. DeRose, P. Doel, N. Emas, S. Ferraro, J. E. Forero-Romero, C. Garcia-Quintero, E. Gaztañaga, G. Gutierrez, S. Heydenreich, K. Honscheid, C. Howlett, D. Huterer, M. Ishak, S. Joudaki, R. Joyce, E. Jullo, R. Kehoe, D. Kirkby, A. Kremin, A. Krolewski, O. Lahav, A. Lambert, C. Lamman, M. Landriau, J. U. Lange, L. Le Guillou, A. Leauthaud, M. Manera, A. Meisner, R. Miquel, S. Nadathur, J. A. Newman, G. Niz, N. Palanque-Delabrouille, W. J. Percival, A. Porredon, F. Prada, I. Pérez-Ràfols, G. Rossi, R. Ruggeri, E. Sanchez, C. Saulder, D. Schlegel, A. Semenaite, J. Silber, D. Sprayberry, Z. Sun, G. Tarlé, B. A. Weaver, P. Zarrouk, R. Zhou, H. Zou   +63 more
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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