Results 81 to 90 of about 34,517 (164)

Measuring Space-Time Geometry over the Ages

, 2012
Theorists are often told to express things in the "observational plane". One can do this for space-time geometry, considering "visual" observations of matter in our universe by a single observer over time, with no assumptions about isometries, initial ...
ALBERT STEBBINS, Birney D. Scott, Sandage A.   +2 more
core   +2 more sources

Angular ellipticity correlations in a composite alignment model for elliptical and spiral galaxies and inference from weak lensing

, 2018
We investigate a physical, composite alignment model for both spiral and elliptical galaxies and its impact on cosmological parameter estimation from weak lensing for a tomographic survey. Ellipticity correlation functions and angular ellipticity spectra
Schaefer, Bjoern Malte, Tugendhat, Tim M.   +1 more
core   +1 more source

Plasma lensing in comparison to gravitational lensing -- Formalism and degeneracies [PDF]

, 2020
Jenny Wagner, Xinzhong Er
openalex   +1 more source

Unveiling the Dynamics of the Universe

, 2016
We explore the dynamics and evolution of the Universe at early and late times, focusing on both dark energy and extended gravity models and their astrophysical and cosmological consequences.
Avelino, Pedro, Barreiro, Tiago, Carvalho, C. Sofia, da Silva, Antonio, Lobo, Francisco S. N., Martin-Moruno, Prado, Mimoso, Jose Pedro, Nunes, Nelson J., Rubiera-Garcia, Diego, Saez-Gomez, Diego, Sousa, Lara, Tereno, Ismael, Trindade, Arlindo   +12 more
core   +2 more sources

On Cross-correlating Weak Lensing Surveys

, 2004
The present generation of weak lensing surveys will be superseded by surveys run from space with much better sky coverage and high level of signal to noise ratio, such as SNAP.
Bacon, Barber, Bernardeau, Bernardeau, Bernardeau, Couchman, Crittenden, Dalal, Dipak Munshi, Fry, Heymans, Hoekstra, Jain, Jain, Jain, Jaroszyn'ski, Kaiser, Kaiser, Kaiser, Moessner, Munshi, Munshi, Munshi, Munshi, Munshi, Munshi, Patrick Valageas, Peacock, Peacock, Refregier, Schaeffer, Schneider, Schneider, Schneider, Szapudi, Szapudi, Valageas, Valageas, Valageas, Valageas, Van Waerbeke, Van Waerbeke, Van Waerbeke, Wambsganss   +43 more
core   +2 more sources

Higher-Order Gravitational Lensing Reconstruction using Feynman Diagrams

, 2014
We develop a method for calculating the correlation structure of the Cosmic Microwave Background (CMB) using Feynman diagrams, when the CMB has been modified by gravitational lensing, Faraday rotation, patchy reionization, or other distorting effects ...
Jenkins, Elizabeth E., Manohar, Aneesh V., Waalewijn, Wouter J., Yadav, Amit P. S.   +3 more
core   +2 more sources

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Evolution of intrinsic ellipticity correlations due to peculiar motion

, 2012
Topic of this paper is the time-evolution of intrinsic correlations of galaxy ellipticities due to peculiar motion. In our model, the galaxy ellipticities are determined from the angular momentum of their host haloes, which can be computed from the ...
Giahi-Saravani, Aram, Schaefer, Bjoern Malte   +1 more
core   +1 more source

Generalised model-independent characterisation of strong gravitational lenses – VI. The origin of the formalism intrinsic degeneracies and their influence on H0 [PDF]

, 2019
Jenny Wagner
openalex   +1 more source

86th Annual Meeting of the Meteoritical Society (2024)

Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley   +1 more source