Information content of weak lensing power spectrum and bispectrum: including the non-Gaussian error covariance matrix
نویسندگان
چکیده
منابع مشابه
Power Spectrum Covariance of Weak Gravitational Lensing
Weak gravitational lensing observations probe the spectrum and evolution of density fluctuations and the cosmological parameters which govern them. At low redshifts, the non-linear gravitational evolution of large scale structure produces a non-Gaussian covariance in the shear power spectrum measurements that affects their translation into cosmological parameters. Using the dark matter halo app...
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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...
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Context. Weak gravitational lensing is one of the most promising tools to investigate the equation-of-state of dark energy. In order to obtain reliable parameter estimations for current and future experiments, a good theoretical understanding of dark matter clustering is essential. Of particular interest is the statistical precision to which weak lensing observables, such as cosmic shear correl...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2012
ISSN: 1365-2966,0035-8711
DOI: 10.1093/mnras/sts340