13-18 December 2015
International Conference Centre Geneva
Europe/Zurich timezone

Relativistic effects with cross-correlations

14 Dec 2015, 14:42
21m
Level -1, Room 17 (International Conference Centre Geneva)

Level -1, Room 17

International Conference Centre Geneva

17 Rue de Varembé, 1211 Geneva

Speaker

Enea Di Dio (OATs-INAF)

Description

I will discuss the galaxy clustering in a relativistic framework in terms of observable quantities, i.e angles and redshifts. A relativistic description includes terms beyond the Kaiser approximation (doppler effects and galaxy evolution), gravitational potentials and integrated terms (cosmic magnification, integrated Sachs-Wolfe and Shapiro time-delay). These terms are currently neglected, but they might play a role in future surveys which probe larger scales. I will show that by correlating different probes, or by using the so-called multi-tracer technique, some relativistic effects could give a non-negligible contribution to the galaxy clustering observables.

Primary author

Enea Di Dio (OATs-INAF)

Presentation Materials