1 code implementation • 8 Dec 2020 • Shi-Fan Chen, Zvonimir Vlah, Emanuele Castorina, Martin White
We present the one-loop 2-point function of biased tracers in redshift space computed with Lagrangian perturbation theory, including a full resummation of both long-wavelength (infrared) displacements and velocities.
Cosmology and Nongalactic Astrophysics
2 code implementations • 15 Oct 2019 • Vanessa Boehm, Chirag Modi, Emanuele Castorina
We find that the relative size of lensing corrections depends on the respective redshift distributions of the lensing sources and galaxies, but that they are generally small for high signal-to-noise correlations.
Cosmology and Nongalactic Astrophysics
3 code implementations • 11 Sep 2019 • Francisco Villaescusa-Navarro, ChangHoon Hahn, Elena Massara, Arka Banerjee, Ana Maria Delgado, Doogesh Kodi Ramanah, Tom Charnock, Elena Giusarma, Yin Li, Erwan Allys, Antoine Brochard, Chi-Ting Chiang, Siyu He, Alice Pisani, Andrej Obuljen, Yu Feng, Emanuele Castorina, Gabriella Contardo, Christina D. Kreisch, Andrina Nicola, Roman Scoccimarro, Licia Verde, Matteo Viel, Shirley Ho, Stephane Mallat, Benjamin Wandelt, David N. Spergel
The Quijote simulations are a set of 44, 100 full N-body simulations spanning more than 7, 000 cosmological models in the $\{\Omega_{\rm m}, \Omega_{\rm b}, h, n_s, \sigma_8, M_\nu, w \}$ hyperplane.
Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics
no code implementations • 4 Jul 2019 • Chirag Modi, Martin White, Anze Slosar, Emanuele Castorina
For redshifts $z=2$ and 4, we are able to reconstruct 21cm field with cross correlation, $r_c > 0. 8$ on all scales for both our optimistic and pessimistic assumptions about foreground contamination and for different levels of thermal noise.
Cosmology and Nongalactic Astrophysics
2 code implementations • 26 Apr 2019 • Chirag Modi, Emanuele Castorina, Yu Feng, Martin White
This paper introduces the Hidden Valley simulations, a set of trillion-particle N-body simulations in gigaparsec volumes aimed at intensity mapping science.
Cosmology and Nongalactic Astrophysics
1 code implementation • 22 Oct 2018 • Cosmic Visions 21 cm Collaboration, Réza Ansari, Evan J. Arena, Kevin Bandura, Philip Bull, Emanuele Castorina, Tzu-Ching Chang, Shi-Fan Chen, Liam Connor, Simon Foreman, Josef Frisch, Daniel Green, Matthew C. Johnson, Dionysios Karagiannis, Adrian Liu, Kiyoshi W. Masui, P. Daniel Meerburg, Moritz Münchmeyer, Laura B. Newburgh, Andrej Obuljen, Paul O'Connor, Hamsa Padmanabhan, J. Richard Shaw, Christopher Sheehy, Anže Slosar, Kendrick Smith, Paul Stankus, Albert Stebbins, Peter Timbie, Francisco Villaescusa-Navarro, Benjamin Wallisch, Martin White
This white paper envisions a revolutionary post-DESI, post-LSST dark energy program based on intensity mapping of the redshifted 21cm emission line from neutral hydrogen at radio frequencies.
Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics High Energy Physics - Experiment
1 code implementation • 11 Oct 2018 • Florian Beutler, Emanuele Castorina, Pierre Zhang
We present estimators for the odd power spectrum multipoles and, detect these multipoles in BOSS DR12 with high significance.
Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies
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
3 code implementations • 9 Sep 2016 • Zvonimir Vlah, Emanuele Castorina, Martin White
We compare the ingredients of the GSM to a suite of large N-body simulations, and show the performance of the theory on the low order multipoles of the redshift-space correlation function and power spectrum.
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
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
