Detecting baryon acoustic oscillations by 3d weak lensing
作者： Alessandra Grassi , Björn Malte Schäfer
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摘要: We investigate the possibility of detecting baryon acoustic oscillation features in cosmic matter distribution by 3d weak lensing. Baryon oscillations are inaccessible even to lensing tomography because wide line-of-sight weighting functions and require a specialized approach via shear estimates. quantify uncertainty estimating spectrum amplitude at wave vectors Fisher-matrix with fixed cosmology show this way that future surveys such as EUCLID DES able pick up first four wiggles, giving better precision measurement. also provide detailed investigation correlation existing between errors their scaling behavior respect survey parameters median redshift, error on galaxy shape measurement, sky coverage, finally number wiggles one is trying determine.
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