Results 171 to 180 of about 11,925 (196)

Gravitational Lensing from a Spacetime Perspective. [PDF]

Living Rev Relativ, 2004
Perlick V.
europepmc   +1 more source

Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Resolving the hot and ionized Universe through the Sunyaev-Zeldovich effect. [PDF]

Open Res Eur
Di Mascolo L, Perrott Y, Mroczkowski T, Raghunathan S, Andreon S, Ettori S, Simionescu A, van Marrewijk J, Cicone C, Lee M, Nelson D, Sommovigo L, Booth M, Klaassen P, Andreani P, Cordiner MA, Johnstone D, van Kampen E, Liu D, Maccarone TJ, Morris TW, Orlowski-Scherer J, Saintonge A, Smith M, Thelen AE, Wedemeyer S.   +25 more
europepmc   +1 more source

The Hubble Constant. [PDF]

Living Rev Relativ, 2007
Jackson N.
europepmc   +1 more source

On Special Optical Modes and Thermal Issues in Advanced Gravitational Wave Interferometric Detectors. [PDF]

Living Rev Relativ, 2009
Vinet JY.
europepmc   +1 more source

Gravitational Lensing in Astronomy. [PDF]

Living Rev Relativ, 1998
Wambsganss J.
europepmc   +1 more source

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

Photometric redshift uncertainties in weak gravitational lensing shear analysis: models and marginalization

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT Recovering credible cosmological parameter constraints in a weak lensing shear analysis requires an accurate model that can be used to marginalize over nuisance parameters describing potential sources of systematic uncertainty, such as the uncertainties on the sample redshift distribution n(z).
Tianqing Zhang, Rachel Mandelbaum, Xiangchong Li   +2 more
exaly   +3 more sources

im3shape: a maximum likelihood galaxy shear measurement code for cosmic gravitational lensing [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
We present and describe im3shape, a new publicly available galaxy shape measurement code for weak gravitational lensing shear. im3shape performs a maximum likelihood fit of a bulge-plus-disc galaxy model to noisy images, incorporating an applied point spread function.
Joe Zuntz, Tomasz Kacprzak, Michael Hirsch   +2 more
exaly   +3 more sources

Strong gravitational lensing’s ‘external shear’ is not shear [PDF]

Monthly Notices of the Royal Astronomical Society
ABSTRACT The distribution of mass in galaxy-scale strong gravitational lenses is often modelled as an elliptical power-law plus ‘external shear’, which notionally accounts for neighbouring galaxies and cosmic shear along our line of sight.
Amy Etherington, James Nightingale, Richard J Massey   +2 more
exaly   +6 more sources

Weak gravitational lensing shear measurement with FPFS: analytical mitigation of noise bias and selection bias [PDF]

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT Dedicated ‘Stage IV’ observatories will soon observe the entire extragalactic sky, to measure the ‘cosmic shear’ distortion of galaxy shapes by weak gravitational lensing. To measure the apparent shapes of those galaxies, we present an improved version of the Fourier Power Function Shapelets (FPFS) shear measurement method. This
Xiangchong Li, Yin Li, Richard J Massey
exaly   +5 more sources