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Title: Astrophysics Motivation behind the Pierre Auger Southern Observatory Enhancements

Abstract

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.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
919587
Report Number(s):
FERMILAB-CONF-07-460-A-TD
arXiv eprint number arXiv:0709.0772; TRN: US200822%%424
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Conference
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ASTROPHYSICS; CONFINEMENT; DISTRIBUTION; ENERGY RANGE; FLUORESCENCE; MUON DETECTION; TELESCOPES; Astrophysics

Citation Formats

Medina-Tanco, Gustavo, and Collaboration, for the Pierre Auger. Astrophysics Motivation behind the Pierre Auger Southern Observatory Enhancements. United States: N. p., 2007. Web.
Medina-Tanco, Gustavo, & Collaboration, for the Pierre Auger. Astrophysics Motivation behind the Pierre Auger Southern Observatory Enhancements. United States.
Medina-Tanco, Gustavo, and Collaboration, for the Pierre Auger. Sat . "Astrophysics Motivation behind the Pierre Auger Southern Observatory Enhancements". United States. https://www.osti.gov/servlets/purl/919587.
@article{osti_919587,
title = {Astrophysics Motivation behind the Pierre Auger Southern Observatory Enhancements},
author = {Medina-Tanco, Gustavo and Collaboration, for the Pierre Auger},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/919587}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {9}
}

Conference:
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