Opening the ultra high energy cosmic ray window from the top

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While several arguments can be proposed against the existence of particles with energy in excess of (3--5) x 10{sup 19} eV in the cosmic ray spectrum, these particles are actually observed and their origin seeks for an explanation. After a description of the problems encountered in explaining these ultra-high energy cosmic rays (UHECRs) in the context of astrophysical sources, the authors review the so-called Top-Down (TD) Models, in which UHECRs are the result of the decay of very massive unstable particles, possibly created in the Early Universe. Particular emphasis will be given to the signatures of the TD models, likely ... continued below

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219 Kilobytes pages

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Blasi, Pasquale August 1, 2000.

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Description

While several arguments can be proposed against the existence of particles with energy in excess of (3--5) x 10{sup 19} eV in the cosmic ray spectrum, these particles are actually observed and their origin seeks for an explanation. After a description of the problems encountered in explaining these ultra-high energy cosmic rays (UHECRs) in the context of astrophysical sources, the authors review the so-called Top-Down (TD) Models, in which UHECRs are the result of the decay of very massive unstable particles, possibly created in the Early Universe. Particular emphasis will be given to the signatures of the TD models, likely to be accessible to upcoming experiments like Auger.

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219 Kilobytes pages

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  • Vulcano Workshop ``Frontier Objects in Astrophysics and Particle Physics'', Vulcano (IT), 05/22/2000--05/27/2000

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  • Report No.: FERMILAB-Conf-00/163-A
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 759120
  • Archival Resource Key: ark:/67531/metadc704582

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  • August 1, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 1, 2016, 6:58 p.m.

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Blasi, Pasquale. Opening the ultra high energy cosmic ray window from the top, article, August 1, 2000; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc704582/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.