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Pierre Auger Observatory Some science topics Spectrum

Explore some science topics at Pierre Auger Observatory, including spectrum analysis, inclined events, fluorescence yield, and neutrino limits. This observatory, with key features like energy parameters and hybrid measurements, offers insights into cosmic ray phenomena. Learn about data from not simulated events, comparisons with other observatories, and signal processing for extracting valuable information. Dive into the world of cosmic rays and cutting-edge research happening at Auger Observatory.

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Pierre Auger Observatory Some science topics Spectrum

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  1. Pierre Auger Observatory Some science topics Spectrum Inclined Events Fluorescence Yield Neutrino Limits Clusters/Anisotropy (Diego Harari) Photon Limit (Markus Risse) James W. Cronin Rencontres du Vietnam Hanoi August 7, 2006 1

  2. S1000 is Energy parameter 8

  3. SD energy ~ 1019.8

  4. Key feature of the Auger Observatory Hybrid measurements: Calibration of energy and shower geometry by fluorescence telescope

  5. 14

  6. Measured , not simulated

  7. Measured Not simulated By Tokonatsu Yamamoto University of Chicago

  8. Normalized to 1.0 at sec theta = 1.27 or theta = 38 deg Attenuation curve by constant intensity technique Measured from data not simulated 16

  9. ICRC 2005 18

  10. 19

  11. Comparison with HiRes1, AGASA

  12. 32,000 Inclined showers ≥ 600 Very large events with more than 50 tanks triggered

  13. Energy reconstruction Log(E/EeV) = 0.73 ± 0.03 + (1.04 ± 0.06) log(N19) Hybrid data: FD versus SD reconstruction Inclined showers > 60 deg

  14. 9 Signal processing can extract em/muon ratio

  15. Old Shower: pure muons 11

  16. Work in progress Preliminary ! Theoretical uncertainty ± factor 3 Preliminary ! 23

  17. Elongation Rate 17.5 18.5 18.0 18.75 19.25 19.75 Nicholas Busca Nicholas Busca

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