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. © 2010 American Institute of Physics.
UHECR maps: Mysteries and surprises / Fargion, Daniele. - In: AIP CONFERENCE PROCEEDINGS. - ISSN 0094-243X. - STAMPA. - 1223:(2010), pp. 149-158. (Intervento presentato al convegno 7th Workshop on Gamma-ray Physics in the LHC Era tenutosi a Assisi nel 7 October 2009 through 9 October 2009) [10.1063/1.3395980].
UHECR maps: Mysteries and surprises
FARGION, Daniele
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. © 2010 American Institute of Physics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.