Results 101 to 110 of about 706,236 (203)

Propagating Residual Biases in Cosmic Shear Power Spectra

The Open Journal of Astrophysics, 2019
In this paper we derive a full expression for the propagation of multiplicative and additive shape measurement biases into the cosmic shear power spectrum.
Thomas D. Kitching, Paniez Paykari, Henk Hoekstra, Mark Cropper   +3 more
doaj   +1 more source

Gravity-selected Cluster Samples: A New Take on the Compton-y–Mass Relation

The Astrophysical Journal
We investigate the scaling relation between the Compton- y parameter and mass in a gravity-selected sample of galaxy clusters, selected based on their gravitational lensing effects on background galaxies. Unlike intracluster medium (ICM)−selected samples,
S. Andreon, M. Radovich
doaj   +1 more source

DESI-DR1 $3 \times 2$-pt analysis: consistent cosmology across weak lensing surveys

The Open Journal of Astrophysics
We present a joint cosmological analysis of projected galaxy clustering observations from the Dark Energy Spectroscopic Instrument Data Release 1 (DESI-DR1), and overlapping weak gravitational lensing observations from three datasets: the Kilo-Degree ...
A, Porredon, C. Blake, J. U. Lange, N. Emas, J. Aguilar, S. Ahlen, A. Bera, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, J. Coloma Nadal, A. Cuceu, K. S. Dawson, A. de la Macorra, Biprateep Dey, P. Doel, A. Elliott, S. Ferraro, A. Font-Ribera, J. E. Forero-Romero, C. Garcia-Quintero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, J. Guy, B. Hadzhiyska, H. K. Herrera-Alcantar, S. Heydenreich, K. Honscheid, C. Howlett, D. Huterer, M. Ishak, S. Joudaki, R. Joyce, D. Kirkby, A. Kremin, A. Krolewski, O. Lahav, C. Lamman, M. Landriau, L. Le Guillou, A. Leauthaud, M. E. Levi, M. Manera, A. Meisner, R. Miquel, S. Nadathur, J. A. Newman, G. Niz, N. Palanque-Delabrouille, W. J. Percival, C. Poppett, F. Prada, I. Pérez-Ràfols, A. Robertson, G. Rossi, R. Ruggeri, E. Sanchez, C. Saulder, D. Schlegel, M. Schubnell, A. Semenaite, H. Seo, J. Silber, A. Souki, D. Sprayberry, G. Tarlé, M. Vargas-Magaña, B. A. Weaver, C. Zhou, R. Zhou, H. Zou, DESI Colllaboration   +73 more
doaj   +1 more source

Weak lensing: applications in gravitational wave and galaxy cluster cosmology [PDF]

Radiation travelling through the Universe is weakly lensed by Large Scale Structure. Measurements of this effect are a valuable probe of the content and dynamics of the Universe.
Mpetha, Charlie Tupman
core   +1 more source

The DESI-Lensing Mock Challenge: large-scale cosmological analysis of 3x2-pt statistics

The Open Journal of Astrophysics
The current generation of large galaxy surveys will test the cosmological model by combining multiple types of observational probes. Realising the statistical promise of these new datasets requires rigorous attention to all aspects of analysis including ...
Chris Blake, C. Garcia-Quintero, S. Ahlen, D. Bianchi, D. Brooks, T. Claybaugh, A. de la Macorra, J. DeRose, A. Dey, P. Doel, N. Emas, S. Ferraro, J. E. Forero-Romero, G. Gutierrez, S. Heydenreich, K. Honscheid, C. Howlett, M. Ishak, S. Joudaki, E. Jullo, R. Kehoe, D. Kirkby, A. Kremin, A. Krolewski, M. Landriau, J. U. Lange, A. Leauthaud, M. E. Levi, M. Manera, R. Miquel, J. Moustakas, G. Niz, W. J. Percival, I. Pérez-Ràfols, A. Porredon, G. Rossi, R. Ruggeri, E. Sanchez, C. Saulder, D. Schlegel, D. Sprayberry, Z. Sun, G. Tarlé, B. A. Weaver   +43 more
doaj   +1 more source

Black Hole–Halo Mass Relation from UNIONS Weak Lensing

The Astrophysical Journal Letters
This Letter presents, for the first time, direct constraints on the black hole–halo mass relation using weak gravitational-lensing measurements. We construct type I and type II active galactic nucleus (AGN) samples from the Sloan Digital Sky Survey, with
Qinxun Li, Martin Kilbinger, Wentao Luo, Kai Wang, Huiyuan Wang, Anna Wittje, Hendrik Hildebrandt, Ludovic Van Waerbeke, Michael J. Hudson, Samuel Farrens, Tobías I. Liaudat, Huiling Liu, Ziwen Zhang, Qingqing Wang, Elisa Russier, Axel Guinot, Lucie Baumont, Fabian Hervas Peters, Thomas de Boer, Jiaqi Wang, Alan McConnachie, Jean-Charles Cuillandre, Sébastien Fabbro   +22 more
doaj   +1 more source

Testing general relativity with cosmological large scale structure. [PDF]

Gen Relativ Gravit, 2022
Durrer R.
europepmc   +1 more source

The Dependence of Dark Matter Halo Properties on the Morphology of Their Central Galaxies from Weak Lensing

The Astrophysical Journal
Xu & Jing reported a monotonic relationship between the host halo mass M _h and the morphology of massive central galaxies, characterized by the Sérsic index n , at fixed stellar mass, suggesting that morphology could serve as a good secondary proxy for ...
Zhenjie Liu, Kun Xu, Jun Zhang, Wenting Wang, Cong Liu   +4 more
doaj   +1 more source

Detecting Gravitational Lensing Cosmic Shear from Samples of Several Galaxies Using Two-dimensional Spectral Imaging

The Astrophysical Journal, 2002
Studies of weak gravitational lensing by large-scale structures require the measurement of the distortions introduced to the shapes of distant galaxies at the few percent level by anisotropic light deflection along the line of sight. To detect this signal on 1-10 arcmin scales in a particular field, accurate measurements of the correlations between the
openaire   +2 more sources

Pixel Noise Effect and its Correction method by ERA Method for Precise Weak Gravitational Lensing Shear Measurement

, 2017
15 ...
Okura, Yuki, Futamase, Toshifumi
openaire   +2 more sources