Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/92514
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Type: Journal article
Title: A targeted search for point sources of EeV neutrons
Author: Aab, A.
Abreu, P.
Aglietta, M.
Ahlers, M.
Ahn, E.
Al Samarai, I.
Albuquerque, I.
Allekotte, I.
Allen, J.
Allison, P.
Almela, A.
Alvarez Castillo, J.
Alvarez-Muñiz, J.
Alves Batista, R.
Ambrosio, M.
Aminaei, A.
Anchordoqui, L.
Andringa, S.
Aramo, C.
Arqueros, F.
et al.
Citation: Astrophysical Journal Letters, 2014; 789(2):L34-1-L34-7
Publisher: Institute of Physics Publishing
Issue Date: 2014
ISSN: 2041-8205
2041-8213
Statement of
Responsibility: 
A. Aab ... K.B. Barber ... J. A. Bellido ... R. W. Clay ... M. J. Cooper ... B. R. Dawson ... T. D. Grubb ... T. A. Harrison ... G. C. Hill ... M. Malacari ... S. J. Saffi ... J. Sorokin ... et al. (The Pierre Auger Collaboration)
Abstract: A flux of neutrons from an astrophysical source in the Galaxy can be detected in the Pierre Auger Observatory as an excess of cosmic-ray air showers arriving from the direction of the source. To avoid the statistical penalty for making many trials, classes of objects are tested in combinations as nine "target sets," in addition to the search for a neutron flux from the Galactic center or from the Galactic plane. Within a target set, each candidate source is weighted in proportion to its electromagnetic flux, its exposure to the Auger Observatory, and its flux attenuation factor due to neutron decay. These searches do not find evidence for a neutron flux from any class of candidate sources. Tabulated results give the combined p-value for each class, with and without the weights, and also the flux upper limit for the most significant candidate source within each class. These limits on fluxes of neutrons significantly constrain models of EeV proton emission from non-transient discrete sources in the Galaxy.
Keywords: cosmic rays; Galaxy: disk; methods: data analysis
Description: A. Aab, K.B. Barber, J. A. Bellido, R. W. Clay, M. J. Cooper, B. R. Dawson, T. D. Grubb, T. A. Harrison, G. C. Hill, M. Malacari, S. J. Saffi and J. Sorokin are members of The Pierre Auger Collaboration
Rights: © 2014. The American Astronomical Society. All rights reserved.
RMID: 0030009096
DOI: 10.1088/2041-8205/789/2/L34
Appears in Collections:IPAS publications

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