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Demonstrating Agreement between Radio and Fluorescence Measurements of the Depth of Maximum of Extensive Air Showers

Understanding the origin and nature of ultra-high energy cosmic rays has been one of the driving forces of the field of astroparticle physics. A key piece of information is what type of particles cosmic rays consist of.

New Spokespersons for the Pierre Auger Observatory

November 2023 - We are very happy to announce the election of our new spokespersons Antonella Castellina and Markus Roth at the recent collaboration meeting of the Pierre Auger Observatory.

Best Talk: Eric Mayotte

Auger Impact Award 2023

The Auger Impact Awards 2023 go to Collaborators Eva dos Santos and Jorge Ruben Rodriguez.

Do black-hole mergers emit ultra-high energy photons?

For the first time, the possible appearance of ultra-high energy photons from merging compact objects such as black holes was tested.

What is the origin of ultra-high-energy cosmic rays?

The energy spectrum and mass composition data from the Pierre Auger Observatory constrain the source properties.

Great Achievement: Phase II of the Pierre Auger Observatory has begun!

The deployment team in Malargüe has completed the systematic deployment of the UUBs.

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