Initial Results from a Laboratory Emulation of Weak Gravitational Lensing Measurements
نویسندگان
چکیده
منابع مشابه
Initial results from a laboratory emulation of weak gravitational lensing measurements
*S. Seshadri, C. Shapiro, T. Goodsall, J. Fucik, C. Hirata, J.D. Rhodes, B.T.P. Rowe, R.M. Smith Jet Propulsion Laboratory, California Institute of Technology, MS 300-315, 4800 Oak Grove Drive, Pasadena, CA California Institute of Technology, MC 11-17, 1200 East California Blvd, Pasadena, CA 91125 Department of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UK C...
متن کاملWeak gravitational lensing
We review theory and applications of weak gravitational lensing. After summarising Friedmann}Lemam( tre cosmological models, we present the formalism of gravitational lensing and light propagation in arbitrary space}times. We discuss how weak-lensing e!ects can be measured. The formalism is then applied to reconstructions of galaxy-cluster mass distributions, gravitational lensing by large-scal...
متن کاملWeak gravitational lensing
— Luminous tracers have been used extensively to map the large-scale matter distribution in the Universe. Similarly the dynamics of stars or galaxies can be used to estimate masses of galaxies and clusters of galaxies. However, assumptions need to be made about the dynamical state or how well galaxies trace the underlying dark matter distribution. The gravitational tidal field affects the paths...
متن کاملWeak Gravitational Lensing Bispectrum
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. We study the threepoint statistics of the convergence, specifically the bispectrum, using the dark matter halo app...
متن کاملAtomic inference from weak gravitational lensing data
We present a novel approach to reconstructing the projected mass distribution from the sparse and noisy weak gravitational lensing shear data. The reconstructions are regularised via the knowledge gained from numerical simulations of clusters, with trial mass distributions constructed from n NFW profile ellipsoidal components. The parameters of these “atoms” are distributed a priori as in the s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 2013
ISSN: 0004-6280,1538-3873
DOI: 10.1086/673318