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