Measuring the lensing potential with tomographic galaxy number counts

@article{Montanari2015MeasuringTL,
  title={Measuring the lensing potential with tomographic galaxy number counts},
  author={Francesco Montanari and Ruth Durrer},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
  year={2015}
}
We investigate how the lensing potential can be measured tomographically with future galaxy surveys using their number counts. Such a measurement is an independent test of the standard $\Lambda$CDM framework and can be used to discern modified theories of gravity. We perform a Fisher matrix forecast based on galaxy angular-redshift power spectra, assuming specifications consistent with future photometric Euclid-like surveys and spectroscopic SKA-like surveys. For the Euclid-like survey we… 
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