1 code implementation • 24 Oct 2016 • Luca Alberto Rizzo, Francisco Villaescusa-Navarro, Pierluigi Monaco, Emiliano Munari, Stefano Borgani, Emanuele Castorina, Emiliano Sefusatti
We demonstrate that the abundance of halos in cosmologies with massless and massive neutrinos from PINOCCHIO matches very well the outcome of simulations, and point out that PINOCCHIO can reproduce the $\Omega_\nu-\sigma_8$ degeneracy that affects the halo mass function.
Cosmology and Nongalactic Astrophysics
1 code implementation • 16 May 2016 • Emiliano Munari, Pierluigi Monaco, Emiliano Sefusatti, Emanuele Castorina, Faizan G. Mohammad, Stefano Anselmi, Stefano Borgani
In Fourier space and using 3LPT for halo displacements, the halo power spectrum is recovered to within 10 per cent up to $k_{max}\sim0. 5\ h/$Mpc.
Cosmology and Nongalactic Astrophysics
2 code implementations • 22 Dec 2015 • Emiliano Sefusatti, Martin Crocce, Roman Scoccimarro, Hugh Couchman
Efficient estimators of Fourier-space statistics for large number of objects rely on Fast Fourier Transforms (FFTs), which are affected by aliasing from unresolved small scale modes due to the finite FFT grid.
Cosmology and Nongalactic Astrophysics
no code implementations • 6 Nov 2013 • Matteo Costanzi, Francisco Villaescusa-Navarro, Matteo Viel, Jun-Qing Xia, Stefano Borgani, Emanuele Castorina, Emiliano Sefusatti
We find that, in a massive neutrino cosmology, our correction to the halo mass function produces a shift in the $\sigma_8(\Omega_{\rm m}/0. 27)^\gamma$ relation which can be quantified as $\Delta \gamma \sim 0. 05$ and $\Delta \gamma \sim 0. 14$ assuming one ($N_\nu=1$) or three ($N_\nu=3$) degenerate massive neutrino, respectively.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
no code implementations • 4 Nov 2013 • Francisco Villaescusa-Navarro, Federico Marulli, Matteo Viel, Enzo Branchini, Emanuele Castorina, Emiliano Sefusatti, Shun Saito
We compute the bias between the spatial distribution of dark matter haloes and the overall matter and cold dark matter distributions using statistical tools such as the power spectrum and the two-point correlation function.
Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology
