Results 191 to 200 of about 591 (218)

First measurement of the Weyl potential evolution from the Year 3 Dark Energy Survey data: Localising the σ8 tension

Bonvin C, Tutusaus I, Grimm N.
europepmc   +1 more source

Primordial Rotating Disk Composed of ≥15 Star Forming Clumps at Cosmic Dawn

Fujimoto S, Ouchi M, Kohno K, Valentino F, Giménez-Arteaga C, Brammer G, Furtak L, Kohandel M, Oguri M, Pallottini A, Richard J, Zitrin A, Bauer F, Boylan-Kolchin M, Dessauges-Zavadsky M, Egami E, Finkelstein S, Ma Z, Smail I, Watson D, Hutchison T, Rigby J, Welch B, Ao Y, Bradley L, Caminha G, Caputi K, Espada D, Endsley R, Fudamoto Y, González-López J, Hatsukade B, Koekemoer A, Kokorev V, Laporte N, Lee M, Magdis G, Ono Y, Rizzo F, Shibuya T, Shimasaku K, Sun F, Toft S, Umehata H, Wang T, Yajima H.   +45 more
europepmc   +1 more source

Statistical methods in weak gravitational lensing

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Weak gravitational lensing [PDF]

Physics Reports, 2001
Review; 223 pages; figures embedded; to be submitted to Physics Reports; constructive comments are ...
Matthias Bartelmann, Peter Schneider
exaly   +4 more sources

Weak gravitational lensing by voids [PDF]

Monthly Notices of the Royal Astronomical Society, 1999
We consider the prospects for detecting weak gravitational lensing by underdensities (voids) in the large-scale matter distribution. We derive the basic expressions for magnification and distortion by spherical voids. Clustering of the background sources and cosmic variance are the main factors which limit in principle the detection of lensing by voids.
Luca Amendola, Ioav Waga, Amendola Luca   +2 more
exaly   +3 more sources

Baryons, neutrinos, feedback and weak gravitational lensing [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
(Abridged) The effect of baryonic feedback on the dark matter mass distribution is generally considered to be a nuisance to weak gravitational lensing. Measurements of cosmological parameters are affected as feedback alters the cosmic shear signal on angular scales smaller than a few arcminutes.
Catherine Heymans, Van Waerbeke, Joachim Harnois-Déraps   +2 more
exaly   +4 more sources

Weak Gravitational Lensing and Its Cosmological Applications [PDF]

Annual Review of Nuclear and Particle Science, 2008
Weak gravitational lensing is a unique probe of the dark side of the universe: It provides a direct way to map the distribution of dark matter around galaxies and clusters of galaxies as well as on cosmological scales. Furthermore, the measurement of the weak lensing–induced distortions of the shapes of distant galaxies is a potentially powerful probe
Henk Hoekstra, Bhuvnesh Jain
exaly   +3 more sources

Current status of weak gravitational lensing

New Astronomy Reviews, 2002
Weak gravitational lensing of distant galaxies by foreground structures has proven to be a powerful tool to study the mass distribution in the universe. Nowadays, attention has shifted from clusters of galaxies to the statistical properties of the large scale structures and the halos of (field) galaxies. These applications have become feasible with the
Henk Hoekstra
exaly   +3 more sources

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Weak Gravitational Lensing

2015
In this chapter, we summarize the basics of gravitational lensing. We derive the basic equation in gravitational lensing and summarize the relation between observables and physical quantities. We then introduce some statistical methodologies to extract cosmological information from gravitational lensing analysis.
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Astrophysical Systematics in Weak Gravitational Lensing

2019
Large-scale structure surveys allow us to constrain cosmology through the growth of structure and the expansion history. Together with Cosmic Microwave Background (CMB) measurements from the early Universe, the standard CDM with general relativity has become a concordance model that explains the origin and evolution of our Universe for over thirteen ...
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