Cherenkov Telescope Array potential in the search for Galactic PeVatrons

E. O. Angüner (Avtor), Christopher Eckner (Avtor), Gašper Kukec Mezek (Avtor), Samo Stanič (Avtor), Serguei Vorobiov (Avtor), Lili Yang (Avtor), Gabrijela Zaharijas (Avtor), Danilo Zavrtanik (Avtor), Marko Zavrtanik (Avtor), Lukas Zehrer (Avtor)

Povzetek

One of the major scientific objectives of the future Cherenkov Telescope Array (CTA) Observatory is the search for PeVatrons. PeVatrons are cosmic-ray factories able to accelerate nuclei at least up to the knee feature seen in the spectrum of cosmic rays measured near the Earth. CTA will perform a survey of the full Galactic plane at TeV energies and beyond with unprecedented sensitivity. The determination of efficient criteria to identify PeVatron candidates during the survey is essential in order to trigger further dedicated observations. Here, we present results from a study based on simulations to determine these criteria. The outcome of the study is a PeVatron figure of merit, defined as a metric that provides relations between spectral parameters and spectral cutoff energy lower limits. In addition, simulations of the PeVatron candidate HESS J1641−463 and its parental particle spectrum are presented and discussed. Eventually, our work is applied to simulated population of Galactic PeVatrons, with the aim to determine the sensitivity of CTA.

Ključne besede

galactic cosmic rays;the Cherenkov Telescope Array (CTA) Observatory;very-high-energy gamma rays;Galactic PeVatrons;Galactic plane survey;

Podatki

Jezik:	Angleški jezik
Leto izida:	2019
Tipologija:	1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija:	UNG - Univerza v Novi Gorici
UDK:	539.1
COBISS:	214297603
ISSN:	1824-8039
Št. ogledov:	206
Št. prenosov:	5
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Vrsta dela (COBISS):	Delo ni kategorizirano
Strani:	8 str.
Čas izdaje:	2019
DOI:	10.22323/1.358.0618
ID:	25384818