24-28 April 2017
Palais des Papes, Avignon
Europe/Paris timezone

Numerical tests on renormalised non-linear galaxy bias

26 Apr 2017, 18:15
15m
Chambre du Trésorier (Palais des Papes, Avignon)

Chambre du Trésorier

Palais des Papes, Avignon

Speaker

Kim Werner (Argelander Institut, University of Bonn)

Description

To extract cosmological information from large-scale galaxy clustering, we need accurate modeling of the relationship between dark matter and galaxies (galaxy bias). Recently, field-theory techniques have been used to provide a new description of galaxy biasing in terms of renormalised operators and counter terms, i.e. to build quantities that are not UV sensitive. We test these definitions of the leading-order non-linear bias coefficients (quadratic and tidal bias) against a set of numerical simulations. As a byproduct of our analysis we also discuss the accuracy of the kernels of standard perturbation theory.

Primary authors

Kim Werner (Argelander Institut, University of Bonn) Prof. Cristiano Porciani (Argelander-Institut für Astronomie, University of Bonn)

Presentation Materials