Results 41 to 50 of about 67,033 (286)

Cluster Cosmology Constraints from the 2500 deg2 SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope [PDF]

open access: yesAstrophysical Journal, 2018
We derive cosmological constraints using a galaxy cluster sample selected from the 2500 deg2 SPT-SZ survey. The sample spans the redshift range 0.25 < z < 1.75 and contains 343 clusters with SZ detection significance ξ > 5.
S. Bocquet   +94 more
semanticscholar   +1 more source

Reducing the weak lensing noise for the gravitational wave Hubble diagram using the non-Gaussianity of the magnification distribution [PDF]

open access: yes, 2010
Gravitational wave sources are a promising cosmological standard candle because their intrinsic luminosities are determined by fundamental physics (and are insensitive to dust extinction).
C. Shapiro   +9 more
core   +2 more sources

Intrinsic and Extrinsic Galaxy Alignment [PDF]

open access: yes, 2000
We show with analytic models that the assumption of uncorrelated intrinsic ellipticities of target sources that is usually made in searches for weak gravitational lensing due to large-scale mass inhomogeneities (``field lensing'') is unwarranted.
Blandford, Roger D.   +2 more
core   +4 more sources

Periodontal microbiology and microbial etiology of periodontal diseases: Historical concepts and contemporary perspectives

open access: yesPeriodontology 2000, EarlyView., 2023
Abstract This narrative review summarizes the collective knowledge on periodontal microbiology, through a historical timeline that highlights the European contribution in the global field. The etiological concepts on periodontal disease culminate to the ecological plaque hypothesis and its dysbiosis‐centered interpretation.
Georgios N. Belibasakis   +5 more
wiley   +1 more source

Exact gravitational lensing and rotation curve [PDF]

open access: yes, 2009
Based on the geodesic equation in a static spherically symmetric metric we discuss the rotation curve and gravitational lensing. The rotation curve determines one function in the metric without assuming Einstein's equations. Then lensing is considered in
A. Erdelyi   +8 more
core   +1 more source

Effect of the Brane-Dicke coupling parameter on weak gravitational lensing by wormholes and naked singularities [PDF]

open access: yesPhysical Review D, 2019
In this paper, we analyze the deflection angle of light by Brane-Dicke wormhole in the weak field limit approximation to find the effect of the Brane-Dicke coupling parameter on the weak gravitation lensing.
W. Javed, R. Babar, A. Ovgun
semanticscholar   +1 more source

Weak-lensing Mass Bias in Merging Galaxy Clusters

open access: yesThe Astrophysical Journal, 2023
Although weak lensing (WL) is a powerful method to estimate a galaxy cluster mass without any dynamical assumptions, a model bias can arise when the cluster density profile departs from the assumed model profile. In a merging system, the bias is expected
Wonki Lee   +8 more
doaj   +1 more source

Statistics of Weak Lensing at Small Angular Scales: Analytical Predictions for Lower Order Moments [PDF]

open access: yes, 1999
Weak lensing surveys are expected to provide direct measurements of the statistics of the projected dark matter distribution. Most analytical studies of weak lensing statistics have been limited to quasilinear scales as they relied on perturbative ...
Babul   +71 more
core   +3 more sources

Power Spectrum Covariance of Weak Gravitational Lensing [PDF]

open access: yes, 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

A Methodological Framework to Study Change in Team Cognition Under the Dynamical Hypothesis

open access: yesTopics 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

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