Recent results from the Pierre Auger Observatory

Ultra-High Energy Cosmic-Rays (UHECRs - E>10¹⁸eV) lie at the very end of the cosmic-ray spectrum. Their nature and origin remain largely unknown, and their study is made difficult, in part because of the very low flux impinging on Earth's atmosphere. The leading UHECR experiment in the southern hemisphere is the Pierre Auger Observatory, located in the Mendoza province of Argentina. The Observatory consists of an array of 1660 water Cherenkov detectors spread over 3000 km² and of a collection of 27 fluorescence telescopes located on its outskirt to study the properties of the extensive air showers induced by the UHECRs in the atmosphere. A selection of recent results obtained by the Observatory will be presented in this paper.