Pierre Auger Observatory

Hybrid Detector

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The hybrid nature of the Pierre Auger Observatory provides for two independent ways to see cosmic rays. Read More...

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Who Was Pierre Auger?

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The Pierre Auger Observatory experiment was named after Pierre Victor Auger (1899 - 1993) Read More...

"Physics World Top Ten Breakthrough of 2017"

The Pierre Auger Collaboration wins award of physicsworld.com: "To the Pierre Auger Observatory collaboration for showing that ultra-high-energy cosmic rays come from outside the Milky Way."


New Spokespersons for the Pierre Auger Observatory

We are very happy to announce the election of our new spokespersons at the recent collaboration meeting of the Pierre Auger Observatory.


Calibration of the Logarithmic-Periodic Dipole Antenna (LPDA) Radio Stations at the Pierre Auger Observatory using an Octocopter

In a recent calibration campaign at the Pierre Auger Observatory, the directional and frequency characteristics of the radio stations equipped with logarithmic periodic dipole antennas (LPDAs) have been determined using a remotely piloted octocopter.


Spectral Calibration of the Fluorescence Telescopes of the Pierre Auger Observatory

To estimate the energy of any cosmic ray event detected by the Pierre Auger Observatory, the detectors have to be calibrated.


The Pierre Auger, ANTARES, and IceCube Observatories team up for a search of neutrino emission from the binary neutron star merger GW170817

On August 17, 2017 the LIGO and Virgo collaboration measured a gravitational wave originating from a binary neutron star merger. Within 1.7 seconds, this event was followed by a gamma ray burst (GRB), recorded by the Fermi and INTEGRAL satellites, and subsequent electromagnetic observations in the optical and radio regimes. These observations made it possible for the first time to pinpoint the source location of a gravitational wave event. The source was found to be in a galaxy 130 million light years away, known as NGC 4993. According to model predictions such a system may also accelerate cosmic rays to extreme energies, and thus emit photons and neutrinos up to GeV to EeV energies.


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Auger On Site

Shower Simulations

shower simulation

A computer is used to construct a model of what happens in a high energy cosmic ray airshower. Read More...

Google Earth


A model of the Observatory layout was constructed, to be viewed interactively using Google Earth. Read More...

Event Display


The Pierre Auger Collaboration agreed on making 1% of its data available to the public. Read More...