The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory - Abreu, P.; Albuquerque, Ivone Freire da Mota e; Souza, Vitor de; Gouffon, Philippe; Peixoto, C. J. Todero; Tridapalli, D. B (Journal of Cosmology and Astroparticle Physics, 2011)