Results 51 to 60 of about 30,981 (277)
Weak Gravitational Lensing and Cluster Mass Estimates [PDF]
, 1999 Hierarchical theories of structure formation predict that clusters of galaxies should be embedded in a web like structure, with filaments emanating from them to large distances.
Chris Loken +4 more
core +2 more sources
Cluster Weak Gravitational Lensing
International School of Physics “Enrico Fermi”, 2010 Weak gravitational lensing of background galaxies is a unique, direct probe of the distribution of matter in clusters of galaxies. We review several important aspects of cluster weak gravitational lensing together with recent advances in weak lensing techniques for measuring cluster lensing profiles and constraining cluster structure parameters.
openaire +2 more sources
A Methodological Framework to Study Change in Team Cognition Under the Dynamical Hypothesis
Topics in Cognitive Science, EarlyView., 2023 Abstract The dynamical hypothesis claims that cognitive systems, such as teams, are dynamical systems (i.e., an interdependent collection of individuals and their technology that change together over time). Following this hypothesis, team researchers have adopted dynamical approaches to better understand the team cognitive processes and states that ...
Kyana van Eijndhoven +3 more
wiley +1 more source
European Physical Journal C: Particles and Fields, 2018 Beyond the Einstein–Maxwell model, electromagnetic field might couple with gravitational field through the Weyl tensor. In order to provide one of the missing puzzles of the whole physical picture, we investigate weak deflection lensing for photons ...
Wei-Guang Cao, Yi Xie
doaj +1 more source
, 2009 The cosmic microwave background (CMB) represents a unique source for the study of gravitational lensing. It is extended across the entire sky, partially polarized, located at the extreme distance of z=1100, and is thought to have the simple, underlying ...
Challinor, Anthony +2 more
core +1 more source
Advanced Science, EarlyView.Using machine learning on a mega‐scale global dataset (n = 1,336,840) reveals a robust personality trait architecture beyond the Big Five. A Big Two model, broadly capturing social engagement and internal mentation, defines a geometric space that links personality to neurocognitive profiles.
Kaixiang Zhuang +7 more
wiley +1 more source
Optical properties of null geodesics emerging from dynamical systems
European Physical Journal C: Particles and Fields, 2022 We study optical metrics via null geodesics as a central force system, deduce the related Binet equation and apply the analysis to certain solutions of Einstein’s equations with and without spherical symmetry.
D. Batic, S. Chanda, P. Guha
doaj +1 more source
Power Spectrum Covariance of Weak Gravitational Lensing [PDF]
, 2000 Weak gravitational lensing observations probe the spectrum and evolution of density fluctuations and the cosmological parameters which govern them. At low redshifts, the non-linear gravitational evolution of large scale structure produces a non-Gaussian ...
Bernardeau F. +7 more
core +2 more sources
Weak Gravitational Lensing Bispectrum
The Astrophysical Journal, 2001 Weak gravitational lensing observations probe the spectrum and evolution of density fluctuations and the cosmological parameters which govern them. The non-linear evolution of large scale structure produces a non-Gaussian signal which is potentially observable in galaxy shear data.
Cooray, Asantha, Hu, Wayne
openaire +2 more sources
Study of Free‐Space Optical Quantum Network: Review and Prospectives
Advanced Science, EarlyView.Free from the constraints of fiber connections, free‐space quantum network enables longer and more flexible quantum network connections. This review summarizes and comparatively analyzes free‐space quantum network experiments based on ground stations, satellites, and mobile platforms.
Hua‐Ying Liu, Zhenda Xie, Shining Zhu
wiley +1 more source