Scientific Highlights

Quasi-Constant Time Gap in Multiple Rings of Elves

The Fluorescence Detector (FD) of the Pierre Auger Observatory has been detecting elves with a dedicated trigger since 2013, and its 100 ns time resolution enables unprecedented precision in resolving their internal structure.

The energy spectrum of UHECRs across 3/4 of the sky

New measurements suggest that all the most energetic cosmic rays arise from the same types of extragalactic accelerators.

Mapping the distribution of ultra-high-energy cosmic rays along the Supergalactic Plane

Recently, the Pierre Auger Collaboration systematically studied the distribution of ultra-high-energy cosmic rays at an intermediate angular scale...

An unlikely pairing – cosmic ray detectors and space lasers prove mutually beneficial

When ESA's groundbreaking Aeolus satellite began experiencing a mysterious signal loss in 2019, help came from the Pierre Auger Observatory.

Highlighting the Scintillator Surface Detector

As part of the AugerPrime upgrade, scintillator detectors (SSD) have been added to the existing water-Cherenkov surface detector stations.

Getting insights into the measured dipolar anisotropy

The Pierre Auger Collaboration measured a dipolar anisotropy in the arrival-direction distribution of the cosmic rays with energies in excess of 8x10¹⁸ eV, finding that the flux is about
6.5% larger than the average in one direction of the sky and it is correspondingly smaller in the opposite direction.

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