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Naslov:Testing a Reported Correlation between Arrival Directions of Ultra-high-energy Cosmic Rays and a Flux Pattern from nearby Starburst Galaxies using Telescope Array Data
Avtorji:ID Abbasi, R.U. (Avtor)
ID Lundquist, Jon Paul, UNG (Avtor), et al.
Datoteke:.pdf Abbasi_2018_ApJL_867_L27.pdf (700,72 KB)
MD5: AF65824CAD7E4854CB19ED58DC9A637F
 
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:The Pierre Auger Collaboration (Auger) recently reported a correlation between the arrival directions of cosmic rays with energies above 39 EeV and the flux pattern of 23 nearby starburst galaxies (SBGs). In this Letter, we tested the same hypothesis using cosmic rays detected by the Telescope Array experiment (TA) in the 9-year period from May 2008 to May 2017. Unlike the Auger analysis, we did not optimize the parameter values but kept them fixed to the best-fit values found by Auger, namely 9.7% for the anisotropic fraction of cosmic rays assumed to originate from the SBGs in the list and 12.9◦ for the angular scale of the correlations. The energy threshold we adopted is 43 EeV, corresponding to 39 EeV in Auger when taking into account the energy-scale difference between two experiments. We find that the TA data is compatible with isotropy to within 1.1σ and with the Auger result to within 1.4σ, meaning that it is not capable to discriminate between these two hypotheses.
Ključne besede:astroparticle physics, cosmic rays, galaxies: starburst, methods: data analysis
Verzija publikacije:Objavljena publikacija
Leto izida:2018
Št. strani:5
Številčenje:2, 867
PID:20.500.12556/RUNG-5149-16b3545b-c2b0-fafb-65ea-7df64dfd4591 Novo okno
COBISS.SI-ID:12824579 Novo okno
DOI:10.3847/2041-8213/aaebf9 Novo okno
NUK URN:URN:SI:UNG:REP:IOMCUJ0G
Datum objave v RUNG:27.04.2020
Število ogledov:4239
Število prenosov:157
Metapodatki:XML DC-XML DC-RDF
:
ABBASI, R.U. in LUNDQUIST, Jon Paul, 2018, Testing a Reported Correlation between Arrival Directions of Ultra-high-energy Cosmic Rays and a Flux Pattern from nearby Starburst Galaxies using Telescope Array Data. The Astrophysical Journal Letters [na spletu]. 2018. Vol. 2, no. 867. [Dostopano 7 april 2025]. DOI 10.3847/2041-8213/aaebf9. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=5149
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Gradivo je del revije

Naslov:The Astrophysical Journal Letters
Leto izida:2018

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:27.04.2020

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