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Title:A Northern Sky Survey for Point-Like Sources of EeV Neutral Particles with the Telescope Array Experiment
Authors:Abbasi, R.U. (Author)
Lundquist, J. P. (Author)
et al.
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Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:We report on the search for steady point-like sources of neutral particles around 1018 eV between 2008 and 2013 May with the scintillator SD of the Telescope Array experiment. We found overall no significant point-like excess above 0.5 EeV in the northern sky. Subsequently, we also searched for coincidence with the Fermi bright Galactic sources. No significant coincidence was found within the statistical uncertainty. Hence, we set an upper limit on the neutron flux that corresponds to an averaged flux of 0.07 km−2 yr−1 for E > 1EeV in the northern sky at the 95% confidence level. This is the most stringent flux upper limit in a northern sky survey assuming point-like sources. The upper limit at the 95% confidence level on the neutron flux from Cygnus X-3 is also set to 0.2 km−2 yr−1 for E > 0.5 EeV. This is an order of magnitude lower than previous flux measurements.
Keywords:acceleration of particles, cosmic rays, surveys
Year of publishing:2015
Number of pages:11
Numbering:804, 133
COBISS_ID:5615611 Link is opened in a new window
DOI:10.1088/0004-637X/804/2/133 Link is opened in a new window
License:CC BY-NC-ND 4.0
This work is available under this license: Creative Commons Attribution Non-Commercial No Derivatives 4.0 International
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Record is a part of a journal

Title:The Astrophysical Journal
Shortened title:ApJ
Year of publishing:2015