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Title:A Northern Sky Survey for Point-Like Sources of EeV Neutral Particles with the Telescope Array Experiment
Authors:ID Abbasi, R.U. (Author)
ID Lundquist, Jon Paul, UNG (Author), et al.
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Work type:Not categorized
Typology: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
Publication version:Version of Record
Year of publishing:2015
Number of pages:11
Numbering:133, 804
PID:20.500.12556/RUNG-5141-f9fb2046-9b94-e2c1-c19c-dbd9c492ecba New window
COBISS.SI-ID:5615611 New window
DOI:10.1088/0004-637X/804/2/133 New window
Publication date in RUNG:24.04.2020
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Record is a part of a journal

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


License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:24.04.2020