Pierre Auger Observatory
Public Event Browser

Frequently Asked Questions

Generic information on the Pierre Auger Observatory and its detectors can be found on the Southern site or the main site of Auger. A glossary of the terms used on this web page is also available.

This Public Event Display has just been put online recently. We'll do our best to update this FAQ so the site can be used by non specialists. Feel free to send any question to auger-public-ed@googlegroups.com.

  1. What is a VEM/LDF/T5?
  2. Please refer to the glossary to get the list of the specific terms used on this web page.
  3. The Pierre Auger Observatory is unique in its design as a hybrid detector. Is there any plan to provide a hybrid event display soon?
  4. Yes, and we are currently working on it. It however takes time as the hybrid reconstruction is quite more complex than the surface array only.
  5. How did you select the 10% to make public. Is it random? What is the selection algorithm?
  6. You might have noticed that all event RawId end by 0. This is the way we select events: All T5 events with zenith angle lower than 60 degrees and RawId ending in 0 are published.
  7. Why are events limited to 60 degrees of zenithal angle?
  8. Horizontal events have very flat LDF, are subject to important fluctuations and are distorted by the geomagnetic field. They are complex to reconstruct and interpret, and need a separate reconstruction algorithm. We hope to add this kind of events in a near future.
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