Results 71 to 80 of about 64,982 (304)

Instrumental systematics and weak gravitational lensing [PDF]

Journal of Instrumentation, 2015
We present a pedagogical review of the weak gravitational lensing measurement process and its connection to major scientific questions such as dark matter and dark energy. Then we describe common ways of parametrizing systematic errors and understanding how they affect weak lensing measurements.
openaire   +4 more sources

Periodontal microbiology and microbial etiology of periodontal diseases: Historical concepts and contemporary perspectives

Periodontology 2000, EarlyView., 2023
Abstract This narrative review summarizes the collective knowledge on periodontal microbiology, through a historical timeline that highlights the European contribution in the global field. The etiological concepts on periodontal disease culminate to the ecological plaque hypothesis and its dysbiosis‐centered interpretation.
Georgios N. Belibasakis, Daniel Belstrøm, Sigrun Eick, Ulvi K. Gursoy, Anders Johansson, Eija Könönen   +5 more
wiley   +1 more source

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

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

Studying galaxy troughs and ridges using weak gravitational lensing with the Kilo-Degree Survey [PDF]

Monthly notices of the Royal Astronomical Society, 2018
We study projected underdensities in the cosmic galaxy density field known as 'troughs', and their overdense counterparts, which we call 'ridges'. We identify these regions using a bright sample of foreground galaxies from the photometric Kilo-Degree ...
M. Brouwer, V. Demchenko, J. Harnois-D'eraps, Maciej Bilicki, C. Heymans, H. Hoekstra, K. Kuijken, M. Alpaslan, S. Brough, Yan-Chuan Cai, M. Costa-Duarte, A. Dvornik, T. Erben, H. Hildebrandt, B. Holwerda, P. Schneider, C. Sifón, E. van Uitert   +17 more
semanticscholar   +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

Radio weak gravitational lensing with VLA and MERLIN [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
We carry out an exploratory weak gravitational lensing analysis on a combined VLA and MERLIN radio data set: a deep (3.3 micro-Jy beam^-1 rms noise) 1.4 GHz image of the Hubble Deep Field North. We measure the shear estimator distribution at this radio sensitivity for the first time, finding a similar distribution to that of optical shear estimators ...
Patel, Prina, Bacon, David, Beswick, R., Muxlow, T., Hoyle, B.   +4 more
openaire   +5 more sources

Weak gravitational lensing by multi-horizons black hole

Europhysics letters
We investigate the weak gravitational lensing caused by multi-horizon black hole (MHBH) on light. Using the Gauss-Bonnet theorem, which demonstrates that light bending is a topological and global phenomenon, we are able to deduce the deflection angle of ...
Farzan Mushtaq, Tiecheng Xia, Muhammad Yasir, Aitazaz Ahsan   +3 more
semanticscholar   +1 more source

Morphology of CMB fields—effect of weak gravitational lensing [PDF]

Journal of Cosmology and Astroparticle Physics, 2019
We study the morphology of the cosmic microwave background temperature and polarization fields using the shape and alignment parameters, β and α, that are constructed from the contour Minkowski tensor.
Priya Goyal, P. Chingangbam, S. Appleby
semanticscholar   +1 more source

A synthetic Roman Space Telescope High-Latitude Imaging Survey: simulation suite and the impact of wavefront errors on weak gravitational lensing [PDF]

Monthly notices of the Royal Astronomical Society, 2019
The Nancy Grace Roman Space Telescope (Roman) mission is expected to launch in the mid-2020s. Its weak lensing program is designed to enable unprecedented systematics control in photometric measurements, including shear recovery, point spread function (
M. Troxel, H. Long, C. Hirata, A. Choi, M. Jarvis, R. Mandelbaum, K. Wang, M. Yamamoto, S. Hemmati, P. Capak, P. Capak   +10 more
semanticscholar   +1 more source