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Ultrahigh Energy Cosmic-ray Accelerators

Published online by Cambridge University Press:  25 May 2016

A. V. Olinto
A. V. Olinto*
Affiliation:
Department of Astronomy & Astrophysics & Enrico Fermi Institute, The University of Chicago, Chicago, IL 60637, U.S.A.

Abstract

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The surprising lack of a high energy cutoff in the cosmic ray spectrum at the highest energies, together with an apparently isotropic distribution of arrival directions, have strongly challenged most models proposed for the acceleration of ultrahigh energy cosmic rays. Young neutron star winds may be able to explain the mystery. We discuss this recent proposal after summarizing the observational challenge and plausible acceleration sites. Young neutrons star winds differ from alternative models in the predictions for composition, spectrum, and angular distribution, which will be tested in future experiments.

Type
Part I: Talks
Information
Symposium - International Astronomical Union , Volume 195: Highly Energetic Physical Processes and Mechanisms , 2000 , pp. 303 - 310
Copyright
Copyright © Astronomical Society of the Pacific 2000 

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