Results 111 to 120 of about 1,077 (214)

Intrinsic alignment-lensing interference as a contaminant of cosmic shear [PDF]

, 2004
Cosmic shear surveys have great promise as tools for precision cosmology, but can be subject to systematic errors including intrinsic ellipticity correlations of the source galaxies. The intrinsic alignments are believed to be small for deep surveys, but
Hirata, Christopher M., Seljak, Uroš
core  

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

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

The Shear TEsting Programme 1: Weak lensing analysis of simulated ground-based observations

The Shear TEsting Programme, STEP, is a collaborative project to improve the accuracy and reliability of all weak lensing measurements in preparation for the next generation of wide-field surveys.
Wittman, D, Bridle, S, Gray, M, Clowe, D, Jarvis, M, Waerbeke, LV, Hoekstra, H, Massey, R, Hudelot, P, Dahle, H, Brown, ML, Hetterscheidt, M, Mellier, Y, Bacon, D, Schrabback, T, Bertin, E, Berge, J, Erben, T, Bernstein, G, Margoniner, V, Heymans, C, Kuijken, K, Nakajima, R, Refregier, A, Rhodes, J   +24 more
core  

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

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

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

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

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

Modeling the Impacts of Galaxy Intrinsic Alignments on Weak Lensing Peak Statistics

The Astrophysical Journal
Weak gravitational lensing (WL) peak statistics capture cosmic nonlinear structures and can provide additional cosmological information complementary to cosmic shear two-point correlation analyses.
Tianyu Zhang, Xiangkun Liu, Ziwei Li, Chengliang Wei, Guoliang Li, Yu Luo, Xi Kang, Zuhui Fan   +7 more
doaj   +1 more source