Results 61 to 70 of about 68,770 (225)

Weak Gravitational Lensing Bispectrum

The Astrophysical Journal, 2001
Weak gravitational lensing observations probe the spectrum and evolution of density fluctuations and the cosmological parameters which govern them. The non-linear evolution of large scale structure produces a non-Gaussian signal which is potentially observable in galaxy shear data.
Cooray, Asantha, Hu, Wayne
openaire   +2 more sources

Aperture multipole moments from weak gravitational lensing [PDF]

Monthly Notices of the Royal Astronomical Society, 1997
14 pages including 3 figures; submitted to MNRAS; replaced to improve printing on non-A4 ...
Schneider, Peter, Bartelmann, Matthias
openaire   +2 more sources

Weak lensing, dark matter and dark energy

, 2010
Weak gravitational lensing is rapidly becoming one of the principal probes of dark matter and dark energy in the universe. In this brief review we outline how weak lensing helps determine the structure of dark matter halos, measure the expansion rate of ...
A. Amara, A. Cooray, A. Cooray, A. Leauthaud, A. Leauthaud, A. Refregier, A. Refregier, A.F. Heavens, A.N. Taylor, A.P. Hearin, A.R. Zentner, B. Jain, B. Jain, B. Jain, B. Joachimi, C. Heymans, C. Schimd, C. Shapiro, C. Shapiro, D. Clowe, D. Huterer, D. Huterer, D. Huterer, D. Huterer, D. Huterer, D. Munshi, D. Wittman, D. Wittman, D. Wittman, D.E. Johnston, D.H. Rudd, D.J. Bacon, D.M. Wittman, D.N. Spergel, Dragan Huterer, E. Rozo, E.S. Sheldon, E.S. Sheldon, E.V. Linder, E.V. Linder, F. Bernardeau, F. Bernardeau, F. Schmidt, F. Schmidt, G. Bernstein, G. Bernstein, G. Wilson, G.B. Zhao, G.M. Bernstein, G.M. Bernstein, G.R. Dvali, H. Dahle, H. Hoekstra, H. Hoekstra, H. Hoekstra, H. Hoekstra, H. Oyaizu, H. Zhan, J. Benjamin, J. Frieman, J. Guzik, J. Miralda-Escude, J. Rhodes, J. Zhang, J.A. Tyson, J.F. Hennawi, J.M. Kratochvil, J.P. Dietrich, J.P. Uzan, K. Heitmann, K. Heitmann, K. Heitmann, L. Amendola, L. Fu, L. Hui, L. Marian, L. Marian, L. Van Waerbeke, L. Waerbeke van, M. Bartelmann, M. Hetterscheidt, M. Ishak, M. Jarvis, M. Jarvis, M. Kamionkowski, M. Kilbinger, M. Kleinheinrich, M. Schirmer, M. Takada, M. Takada, M. Takada, M. Takada, M.J. White, M.J. White, M.L. Brown, N. Kaiser, N. Kaiser, N. Padmanabhan, P. Fischer, P. Schneider, P. Schneider, P. Simon, R. Mandelbaum, R. Mandelbaum, R. Massey, R. Massey, R. Massey, R. Reyes, S. Dodelson, S. Dodelson, S. Miyazaki, S.F. Daniel, T. Hamana, T.D. Kitching, T.G. Brainerd, U.L. Pen, W. Hu, W. Hu, W. Hu, W. Hu, W. Hu, W.J. Fang, Z. Ma, Z.M. Ma   +123 more
core   +1 more source

Weak gravitational lensing by Kerr-MOG black hole and Gauss–Bonnet theorem [PDF]

Annals of Physics, 2018
The deflection angle of Kerr-MOG black holes is studied for different values of the parameter in modified gravity (MOG). To this end, we employ the Gauss-Bonnet theorem, which was first studied by Gibbons and Werner and then extended by Ono, Ishihara and
A. Övgün, I. Sakalli, J. Saavedra
semanticscholar   +1 more source

Probing satellite haloes with weak gravitational lensing [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
We demonstrate the possibility of detecting tidal stripping of dark matter subhalos within galaxy groups using weak gravitational lensing. We have run ray-tracing simulations on galaxy catalogues from the Millennium Simulation to generate mock shape catalogues. The ray-tracing catalogues assume a halo model for galaxies and groups, using various models
Gillis, Bryan R., Hudson, Michael J., Hilbert, Stefan, Hartlap, Jan   +3 more
openaire   +2 more sources

KiDS-450 + 2dFLenS: Cosmological parameter constraints from weak gravitational lensing tomography and overlapping redshift-space galaxy clustering [PDF]

, 2017
We perform a combined analysis of cosmic shear tomography, galaxy-galaxy lensing tomography, and redshift-space multipole power spectra (monopole and quadrupole) using 450 deg(2) of imaging data by the Kilo Degree Survey (KiDS-450) overlapping with two ...
S. Joudaki, C. Blake, Andrew Johnson, A. Amon, M. Asgari, A. Choi, T. Erben, K. Glazebrook, J. Harnois-Déraps, C. Heymans, H. Hildebrandt, H. Hoekstra, D. Klaes, K. Kuijken, C. Lidman, A. Mead, L. Miller, D. Parkinson, G. Poole, P. Schneider, M. Viola, C. Wolf   +21 more
semanticscholar   +1 more source

Cross-correlation of the thermal Sunyaev–Zel’dovich effect and weak gravitational lensing: Planck and Subaru Hyper Suprime-Cam first-year data [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Cross-correlation analysis of the thermal Sunyaev–Zel’dovich (tSZ) effect and weak gravitational lensing (WL) provides a powerful probe of cosmology and astrophysics of the intracluster medium. We present the measurement of the cross-correlation of tSZ
K. Osato, M. Shirasaki, H. Miyatake, D. Nagai, N. Yoshida, M. Oguri, R. Takahashi   +6 more
semanticscholar   +1 more source

Weak-lensing Mass Bias in Merging Galaxy Clusters

The Astrophysical Journal, 2023
Although weak lensing (WL) is a powerful method to estimate a galaxy cluster mass without any dynamical assumptions, a model bias can arise when the cluster density profile departs from the assumed model profile. In a merging system, the bias is expected
Wonki Lee, Sangjun Cha, M. James Jee, Daisuke Nagai, Lindsay King, John ZuHone, Urmila Chadayammuri, Sharon Felix, Kyle Finner   +8 more
doaj   +1 more source

Statistics of Weak Lensing at Small Angular Scales: Analytical Predictions for Lower Order Moments [PDF]

, 1999
Weak lensing surveys are expected to provide direct measurements of the statistics of the projected dark matter distribution. Most analytical studies of weak lensing statistics have been limited to quasilinear scales as they relied on perturbative ...
Babul, Balian, Bartelmann, Bartelmann, Bernardeau, Bernardeau, Bernardeau, Bernardeau, Bernardeau, Bhuvnesh Jain, Blandford, Boschan, Colombi, Colombi, Couchman, Davis, Diaferio, Dipak Munshi, Fry, Groth, Gunn, Hamilton, Hui, Jain, Jain, Jain, Jain, Jaroszyński, Jaroszyński, Kaiser, Kaiser, Kauffmann, Kauffmann, Lahav, Lee, Limber, Miralda-Escudé, Mo, Munshi, Munshi, Munshi, Munshi, Munshi, Munshi, Munshi, Munshi, Nityananda, Padmanabhan, Peacock, Peacock, Peebles, Premadi, Reblinsky, Refregier, Schneider, Schneider, Schneider, Scoccimarro, Scoccimarro, Stebbins, Szapudi, Szapudi, Szapudi, Valageas, Valageas, van Waerbeke, Villumsen, Wambsganss, Wambsganss, Wambsganss, Wang, White   +71 more
core   +3 more sources

The mass–richness relation of optically selected clusters from weak gravitational lensing and abundance with Subaru HSC first-year data [PDF]

Nippon Tenmon Gakkai obun kenkyu hokoku, 2019
Constraining the relation between the richness N and the halo mass M over a wide redshift range for optically selected clusters is a key ingredient for cluster-related science in optical surveys, including the Subaru Hyper Suprime-Cam (HSC) survey.
Ryoma Murata, M. Oguri, T. Nishimichi, M. Takada, R. Mandelbaum, S. More, M. Shirasaki, A. Nishizawa, K. Osato   +8 more
semanticscholar   +1 more source