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Title:Energy-position correlation anisotropy of ultra-high energy cosmic rays with Telescope Array Data
Authors:ID Lundquist, Jon Paul, UNG (Author)
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Language:English
Work type:Not categorized
Typology:1.12 - Published Scientific Conference Contribution Abstract
Organization:UNG - University of Nova Gorica
Abstract:Indication of an energy dependent intermediate-scale anisotropy has been found in the arrival directions of ultra-high energy cosmic rays with energies above 20 EeV in the northern hemisphere, using 7 years of TA surface detector data. The previously reported “hotspot“ excess for E>57 EeV is found to correspond to a deficit, or “coldspot“, of events for energies 20<E<57 EeV. At the center of maximum combined significance the excess for energies E>57 EeV has a Li-Ma statistical significance of 4.62σ, and the deficit for energies 20<E<57 EeV a significance of -3.23σ. This combined feature is centered at R.A. = 146◦, decl. = 47◦(3◦ degrees from previously reported hotspot) and is 17◦ from the supergalactic plane. The hot/coldspot feature suggests energy dependent magnetic deflection of the isotropic background and cosmic-rays from a source.
Keywords:UHECR, energy spectrum, anisotropy, magnetic deflection
Place of performance:ICHEP 2016
Year of performance:2016
PID:20.500.12556/RUNG-5174-ef0d64ab-fea2-12b8-cd58-a30436d8d04c New window
COBISS.SI-ID:13190915 New window
NUK URN:URN:SI:UNG:REP:QQSVBWEE
Publication date in RUNG:29.04.2020
Views:2656
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