An observational program focused on the high redshift (2<6) Universe has the opportunity to dramatically improve over upcoming LSS and CMB surveys on measurements of both the standard cosmological model and its extensions. Using a Fisher matrix formalism that builds upon recent advances in Lagrangian perturbation theory, we forecast constraints for future spectroscopic and 21-cm surveys on the standard cosmological model, curvature, neutrino mass, relativistic species, primordial features, primordial non-Gaussianity, dynamical dark energy, and gravitational slip. We compare these constraints with those achievable by current or near-future surveys such as DESI and Euclid, all under the same forecasting formalism, and compare our formalism with traditional linear methods. Our Python code FishLSS − used to calculate the Fisher information of the full shape power spectrum, CMB lensing, the cross-correlation of CMB lensing with galaxies, and combinations thereof − is publicly available.

Cosmology at high redshift -- a probe of fundamental physics / N. Sailer, E. Castorina, S. Ferraro, M. White. - In: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. - ISSN 1475-7516. - 2021:12(2021 Dec), pp. 049.1-049.61. [10.1088/1475-7516/2021/12/049]

Cosmology at high redshift -- a probe of fundamental physics

E. Castorina
Secondo
;
2021

Abstract

An observational program focused on the high redshift (2<6) Universe has the opportunity to dramatically improve over upcoming LSS and CMB surveys on measurements of both the standard cosmological model and its extensions. Using a Fisher matrix formalism that builds upon recent advances in Lagrangian perturbation theory, we forecast constraints for future spectroscopic and 21-cm surveys on the standard cosmological model, curvature, neutrino mass, relativistic species, primordial features, primordial non-Gaussianity, dynamical dark energy, and gravitational slip. We compare these constraints with those achievable by current or near-future surveys such as DESI and Euclid, all under the same forecasting formalism, and compare our formalism with traditional linear methods. Our Python code FishLSS − used to calculate the Fisher information of the full shape power spectrum, CMB lensing, the cross-correlation of CMB lensing with galaxies, and combinations thereof − is publicly available.
astro-ph.CO; astro-ph.CO;
Settore FIS/05 - Astronomia e Astrofisica
17-giu-2021
http://arxiv.org/abs/2106.09713v1
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/871308
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