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Abstract
In this paper we review all the up-to-date Ultra High Energy Cosmic Ray (UHECR) events reported by AUGER, the Telescope Array (TA) and AGASA in common coordinate maps. We also confirm our earliest (2008–2013) model, where UHECRs mostly comprise light nuclei (namely He, Be, B), which explains the Virgo absence and confirms M82 as the main source for the Northern TA Hot Spot. Many more sources, such as NGC253 and several galactic sources, are possible candidates for most of the 376 UHECR events. Several correlated maps, already considered in recent years, are reported to show all the events, with their statistical correlation values.
Highlights
In November 2007, are clustering both within the Southern (AUGER) [1] reported, within 27 events, a rare clustering of Ultra High Energy Cosmic Ray (UHECR) events centered around CenA with a spread of ±15◦: a first Southern Hot Spot anisotropy
In this paper we review all the up-to-date Ultra High Energy Cosmic Ray (UHECR) events reported by AUGER, the Telescope Array (TA) and AGASA in common coordinate maps
It should be remembered that, since very early 2008 [4], we proposed that a possible solution to the AUGER puzzle could be if UHECRs were mostly the lightest nuclei, for example helium
Summary
In November 2007, AUGER [1] reported, within 27 events, a rare clustering of UHECR events centered around CenA with a spread of ±15◦: a first Southern Hot Spot anisotropy. The oldest UHECR AGASA record in the Northern sky (58 events) showed a unique triplet almost overlapping, making the chance probability to find such a clustering for 8 events within 150–200 square degrees, as low as (1 ÷ 4) · 10−4. Considering the additional 58 AGASA events and a triplet clustering within 150◦, the probability shrinks to 10−4 These quintuplet signals are additional to the remaining (more deflected) He-like nuclei found in the wider TA hot spot (21 events among 87 in nearly 2000 square degree sky), whose chance probability to occur is as low as < 2 · 10−4 but their clustering is more diluted and far from M82. A few UHECR sources might be galactic as the very recent multiplet (8 events) along Vela shows Cygnus X3 clustering raised as a peculiar narrow multiplet as well as a much narrower clustering event (around SS433 or Aq1) and possible spread sources along the Magellanic stream regions (LMC and SMC, or NGC 253, a second near – 3.5 Mpc – star-burst source and/or Fornax Dwarf Galaxy source), see Figs. 2–5, 12 and 14–15
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