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UHECR Maps: mysteries and surprises.

Authors :
Fargion, D.
Source :
AIP Conference Proceedings. 3/26/2010, Vol. 1223 Issue 1, p149-158. 10p. 4 Color Photographs, 6 Diagrams, 2 Graphs.
Publication Year :
2010

Abstract

The rise of nucleon UHECR above GZK astronomy made by protons (AUGER November 2007) is puzzled by three main mysteries: an unexpected nearby Virgo UHECR suppression (or absence), a rich crowded clustering frozen vertically along Cen A, a composition suggesting nuclei (not much directional) and not nucleons. The UHECR map, initially consistent with GZK volumes, to day seem to be not much correlated with expected Super Galactic Plane. Moreover slant depth data of UHECR from AUGER airshower shape do not favor the proton but points to a nuclei, while HIRES, on the contrary favors mostly nucleons. We tried (at least partially) to solve the contradictions assuming UHECR as light nuclei (mostly He4) spread by planar galactic fields, randomly at vertical axis. The He4 fragility and its mass and charge explains the Virgo absence (due to He4 opacity above few Mpc) and the Cen A spread clustering (a quarter of the whole sample). However more events and rare doublets and clustering elsewhere are waiting for an answer. Here we foresee hint of new UHECR component: galactic ones. Moreover a careful updated views of UHECR sky over different (Radio, IR, Optics, X, gamma, TeV) background (also Fermi gamma very last records) are also favoring forgotten revolutionary Z-shower model. Both Z-Shower, proton GZK and Lightest nuclei UHECR models have dramatic influence on expected UHE neutrino Astronomy: to be soon revealed by UHE τ neutrino induced air-showers in different ways. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0094243X
Volume :
1223
Issue :
1
Database :
Academic Search Index
Journal :
AIP Conference Proceedings
Publication Type :
Conference
Accession number :
48944273
Full Text :
https://doi.org/10.1063/1.3395980