Supergalactic structure of multiplets with the Telescope Array surface detector

J. P. Lundquist (Avtor), P. Sokolsky (Avtor)

Povzetek

Evidence of supergalactic structure of multiplets has been found for ultra-high energy cosmic rays (UHECR) with energies above 10^19 eV using 7 years of data from the Telescope Array (TA) surface detector. The tested hypothesis is that UHECR sources, and intervening magnetic fields, may be correlated with the supergalactic plane, as it is a fit to the average matter density within the GZK horizon. This structure is measured by the average behavior of the strength of intermediate-scale correlations between event energy and position (multiplets). These multiplets are measured in wedge-like shapes on the spherical surface of the fieldof-view to account for uniform and random magnetic fields. The evident structure found is consistent with toy-model simulations of a supergalactic magnetic sheet and the previously published Hot/Coldspot results of TA. The post-trial probability of this feature appearing by chance, on an isotropic sky, is found by Monte Carlo simulation to be ~4.5σ.

Ključne besede

cosmic rays;ultra-high energy cosmic rays;energy spectrum;anisotropy;large-scale structure;

Podatki

Jezik:	Angleški jezik
Leto izida:	2019
Tipologija:	1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija:	UNG - Univerza v Novi Gorici
UDK:	52
COBISS:	12864515
ISSN:	2100-014X
Št. ogledov:	2169
Št. prenosov:	143
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

URN:	URN:SI:UNG
Vrsta dela (COBISS):	Delo ni kategorizirano
Strani:	Str. 1-6
DOI:	10.1051/epjconf/201921001006
ID:	11596553