Astrophysics Motivation behind the Pierre Auger Southern Observatory Enhancements

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The Pierre Auger Collaboration intends to extend the energy range of its southern observatory in Argentina for high quality data from 0.1 to 3 EeV. The extensions, described in accompanying papers, include three additional fluorescence telescopes with a more elevated field of view (HEAT) and a nested surface array with 750 and 433 m spacing respectively and additional muon detection capabilities (AMIGA). The enhancement of the detector will allow measurement of cosmic rays, using the same techniques, from below the second knee up to the highest energies observed. The evolution of the spectrum through the second knee and ankle, and ... continued below

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Medina-Tanco, Gustavo & Collaboration, for the Pierre Auger September 1, 2007.

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The Pierre Auger Collaboration intends to extend the energy range of its southern observatory in Argentina for high quality data from 0.1 to 3 EeV. The extensions, described in accompanying papers, include three additional fluorescence telescopes with a more elevated field of view (HEAT) and a nested surface array with 750 and 433 m spacing respectively and additional muon detection capabilities (AMIGA). The enhancement of the detector will allow measurement of cosmic rays, using the same techniques, from below the second knee up to the highest energies observed. The evolution of the spectrum through the second knee and ankle, and corresponding predicted changes in composition, are crucial to the understanding of the end of Galactic confinement and the effects of propagation on the lower energy portion of the extragalactic flux. The latter is strongly related to the cosmological distribution of sources and to the composition of the injected spectrum. We discuss the science motivation behind these enhancements as well as the impact of combined HEAT and AMIGA information on the assessment of shower simulations and reconstruction techniques.

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  • Report No.: FERMILAB-CONF-07-460-A-TD
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 919587
  • Archival Resource Key: ark:/67531/metadc898198

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  • September 1, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 2, 2016, 8:26 p.m.

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Medina-Tanco, Gustavo & Collaboration, for the Pierre Auger. Astrophysics Motivation behind the Pierre Auger Southern Observatory Enhancements, article, September 1, 2007; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc898198/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.