Auger test of the Cen A model of highest energy cosmic rays

If, as recently proposed by Farrar and Piran, Cen A is the source of cosmic rays detected above the Greisen-Zatsepin-Kuz'min cutoff, neutrons are approximately 140 more probable than protons to be observed along its line of sight. This is because the proton flux is rendered nearly isotropic by...

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Bibliographic Details
Published in:	Physical review letters Vol. 87; no. 8; p. 081101
Main Authors:	Anchordoqui, L A, Goldberg, H, Weiler, T J
Format:	Journal Article
Language:	English
Published:	United States The American Physical Society 20-08-2001
Subjects:	APERTURES MAGNETIC FIELDS NEUTRONS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PROTONS
Online Access:	Get full text
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Summary:	If, as recently proposed by Farrar and Piran, Cen A is the source of cosmic rays detected above the Greisen-Zatsepin-Kuz'min cutoff, neutrons are approximately 140 more probable than protons to be observed along its line of sight. This is because the proton flux is rendered nearly isotropic by O(microG) intergalactic magnetic fields. With the anticipated aperture of the Southern Auger Observatory, one may expect on the order of 2 neutron events /year above 10(20) eV in the line of sight of Cen A.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 US
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.87.081101