We find that nonlinearities in the dark matter power spectrum are dramatically smaller if the
density field first undergoes a logarithmic map**. In the Millennium simulation, this …
density field first undergoes a logarithmic map**. In the Millennium simulation, this …
The impact of non-Gaussian errors on weak lensing surveys
M Takada, B Jain - Monthly Notices of the Royal Astronomical …, 2009 - academic.oup.com
The weak lensing power spectrum carries cosmological information via its dependence on
the growth of structure and on geometric factors. Since much of the cosmological information …
the growth of structure and on geometric factors. Since much of the cosmological information …
Assessment of the information content of the power spectrum and bispectrum
The covariance matrix of the matter and halo power spectrum and bispectrum are studied.
Using a large suite of simulations, we find that the non-Gaussianity in the covariance is …
Using a large suite of simulations, we find that the non-Gaussianity in the covariance is …
Stochastic gravitational wave background anisotropies in the mHz band: astrophysical dependencies
G Cusin, I Dvorkin, C Pitrou… - Monthly Notices of the …, 2020 - academic.oup.com
We show that the anisotropies of the astrophysical stochastic gravitational wave background
in the mHz band have a strong dependence on the modelling of galactic and sub-galactic …
in the mHz band have a strong dependence on the modelling of galactic and sub-galactic …
Simulations of Baryon Acoustic Oscillations. II. Covariance matrix of the matter power spectrum
R Takahashi, N Yoshida, M Takada… - The Astrophysical …, 2009 - iopscience.iop.org
We use 5000 cosmological N-body simulations of 1 h− 3 Gpc 3 box for the concordance
ΛCDM model in order to study the sampling variances of a nonlinear matter power spectrum …
ΛCDM model in order to study the sampling variances of a nonlinear matter power spectrum …
Probing dark energy with cluster counts and cosmic shear power spectra: including the full covariance
M Takada, S Bridle - New Journal of Physics, 2007 - iopscience.iop.org
Several dark energy experiments are available from a single large-area imaging survey and
may be combined to improve cosmological parameter constraints and/or test inherent …
may be combined to improve cosmological parameter constraints and/or test inherent …