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Title:Telescope Array Combined Fit to Cosmic Ray Spectrum and Composition
Authors:ID Bergman, D. (Author)
ID Lundquist, Jon Paul (Author), et al.
Files:.pdf ICRC2021_338.pdf (1,48 MB)
MD5: 91BEDD64259F263F768266D3B7C6354C
 
URL https://pos.sissa.it/395/338/
 
URL https://pos.sissa.it/395/338/pdf
 
Language:English
Work type:Not categorized
Typology:1.08 - Published Scientific Conference Contribution
Organization:UNG - University of Nova Gorica
Abstract:We present the result of fits of an astrophysical model of UHECR sources to the energy spectrum measured using the Telescope Array (TA) surface detectors and the composition data measured by TA fluorescence detectors in stereo mode. The astrophysical model consists of identical sources, uniformly distributed with a density which evolves with age, where groups of nuclei with varying fractions are accelerated producing a power law source with a rigidity-dependent cutoff. The model includes the propagation effects of photo-pion production, photo-nuclear disintegration and general energy loss from universal expansion. Comparison of model data with detector data in both the energy and the Xmax distributions is done via a forward-folding description of detector effects. A prediction of the cosmogenic neutrino flux at Earth resulting from the cosmic rays produced in the model with these fit values is also presented. The predicted flux is considerably higher than other similar fits to Auger data have previously predicted.
Keywords:Telescope Array, indirect detection, stereo detection, fluorescence detection, ultra-high energy, cosmic rays, energy spectrum, composition, combined fit, cosmogenic neutrinos, multimessenger
Publication status:Published
Year of publishing:2022
PID:20.500.12556/RUNG-8505 New window
COBISS.SI-ID:166662403 New window
DOI:10.22323/1.395.0338 New window
NUK URN:URN:SI:UNG:REP:SRUAURMX
Publication date in RUNG:02.10.2023
Views:895
Downloads:5
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Record is a part of a monograph

Title:37th International Cosmic Ray Conference : ICRC2023
Place of publishing:Trieste, Italy
Publisher:Proceedings of Science
Year of publishing:2022

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License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
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.

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