Speaker
Description
Ultra-high-energy cosmic rays (UHECRs) are the most energetic messengers in the Universe, with energies reaching up to 10$^{20}$ eV. More than half a century after their discovery, the origins of UHECRs remain an open question. Investigating anisotropies in their arrival directions is crucial to unraveling this mystery. The Pierre Auger Observatory, located in Mendoza, Argentina, is the largest cosmic-ray experiment ever constructed, spanning an area of 3000 km². Designed as a hybrid detector, it has been collecting data for nearly two decades. In this contribution, we present a selection of the latest results on anisotropy in the arrival directions of UHECRs. At small and intermediate scales, we provide updates on the all-sky blind search for localized excesses, the study around the Centaurus region, and the likelihood analysis using catalogs of candidate sources. Additionally, we have examined regions where the Telescope Array Collaboration reported hints of excesses and found no significant effects in those directions with a comparable data set. At larger angular scales, we update the dipolar and quadrupolar amplitudes in various energy bins. We also discuss future prospects for these searches, focusing on increased statistics and the anticipated inclusion of event-by-event mass estimators through the AugerPrime upgrade.
