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Naslov:Search for point sources of ultra-high-energy photons with the Telescope Array surface detector
Avtorji:ID Abbasi, R.U. (Avtor)
ID Lundquist, Jon Paul (Avtor), et al.
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:The surface detector (SD) of the Telescope Array (TA) experiment allows us to detect indirectly photons with energies of the order of 10^18 eV and higher, and to separate photons from the cosmic ray background. In this paper, we present the results of a blind search for point sources of ultra-high-energy (UHE) photons in the Northern sky using the TA SD data. The photon-induced extensive air showers are separated from the hadron-induced extensive air shower background by means of a multivariate classifier based upon 16 parameters that characterize the air shower events. No significant evidence for the photon point sources is found. The upper limits are set on the flux of photons from each particular direction in the sky within the TA field of view, according to the experiment’s angular resolution for photons. The average 95 per cent confidence level upper-limits for the point-source flux of photons with energies greater than 10^18, 10^18.5, 10^19, 10^19.5 and 10^20 eV are 0.094, 0.029, 0.010, 0.0073 and 0.0058 km−2yr−1, respectively. For energies higher than 10^18.5 eV, the photon point-source limits are set for the first time. Numerical results for each given direction in each energy range are provided as a supplement to this paper.
Ključne besede:methods: data analysis, cosmic rays, gamma-rays: general
Verzija publikacije:Recenzirani rokopis
Leto izida:2020
Št. strani:11
Številčenje:3, 492
PID:20.500.12556/RUNG-5185-875fc6a6-21d2-0849-1e1e-edfc6ad513ad Novo okno
COBISS.SI-ID:13207555 Novo okno
DOI:10.1093/mnras/stz3618 Novo okno
NUK URN:URN:SI:UNG:REP:R0NCNRZT
Datum objave v RUNG:29.04.2020
Število ogledov:3766
Število prenosov:0
Metapodatki:XML DC-XML DC-RDF
:
ABBASI, R.U. in LUNDQUIST, Jon Paul, 2020, Search for point sources of ultra-high-energy photons with the Telescope Array surface detector. Monthly Notices of the Royal Astronomical Society [na spletu]. 2020. Vol. 3, no. 492. [Dostopano 7 april 2025]. DOI 10.1093/mnras/stz3618. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=5185
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Naslov:Monthly Notices of the Royal Astronomical Society
Leto izida:2020

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
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Začetek licenciranja:29.04.2020

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