Where are the Ultra High Energy Cosmic Ray (UHECR) originated?

Abstract

We consider the recent results on UHECR (Ultra High Energy Cosmic Ray) composition and their distribution in the sky from ten EeV energy (the dipole anisotropy) up to the highest UHECR energies and their clustering maps: UHECR have been found mostly made by light and lightest nuclei. We summarized the arguments that favor a few localized nearby extragalactic sources for most UHECR as CenA, NG 253, M82. We comment also on the possible partial role of a few remarkable galactic UHECR sources. Finally we revive the eventual role of a relic neutrino eV mass in dark hot halo (hit by ZeV neutrinos) to explain the new UHECR clustering events centered around a very far cosmic AGN sources as 3C 454.

UHECR multiplets versus Hot spots clustering in AUGER sky: the forgotten signals

“…The missing of Virgo, the fragments of Cen A UHECR, were inspiring the lightest nuclei UHECR model [8], [2], [9], [3]. These first candidate sources, as well as NGC 253, have been discussed since 2015 [10], [11]. In particular we noted the growing signals around , LMC, SMC and Crab in nearby sky, possibly explained, (now, also or mainly) by NGC 253 multiplets, that are feeding the low energy dipole Auger anisotropy [5].…”

Explosive magnetic hypothesis of the Galaxy spiral structure in the history of the Earth.

“…8c), which corresponds to GCR particles with hyperbolic trajectories. Additionally, there is a sharp decrease in the total particle flux after 5•10 19 eV [145] and a shift of anisotropy to the north with a further increase in CR energy [43];…”

“…-in tens of percent [69] for particles E>39•10 18 eV from the direction ~lg 310° b g 15° [43] (Fig. 8c), which corresponds to GCR particles with hyperbolic trajectories.…”

A shell like kilometer spaced array or a honey comb one around Icecube

“…However we already noted and underlined the presence of a very relevant galactic component in UHECR EeV anisotropy map energy from Crab, Vela and LMC and SMC. [13]. In this search for correlations we concluded from the UHECR clustering angle size, from the very surprising Virgo cluster absence ( the most abundant nearby source at twenty Mpc), that the two hot spot, at 40-60 EeV, might be very probably related to lightest nuclei curier (He,Be,B, opaque at twenty Mpc) [14] and to a few near (few Mpc) active AGN as Cen A, M82 and NGC 253 ones [13].…”