The Cosmic Ray’s Chaotic Motion in the Galaxy
2015
The time series data of ASS (air shower size) obtained by Nishimura-Kamata-Greisen formula are analyzed by the correlation dimension analysis to pick up the chaotic time series events. The arrival directions of the events in the chaotic time series are confirmed to have the anisotropy around 5, 15 and 20 h of R.A. (right ascension). In these directions, there are SNR (supernova remnants), AGN (active galactic nuclei) or TeV (tera electron volts) gamma ray sources. However, they are not expected to be the candidate of the chaotic cosmic rays which have the primary energy between 10 13 eV and 10 16 eV, because the proton cosmic rays should migrate with Larmor rotation at radius 0.3 pc (parsec) and the TeV gamma rays seem not to be emitted so often. Recently, Machida et al. reported the numerical results indicated that the magnetic fields were amplified on the azimuthal direction by the magneto rotational instability. The 20 h R.A is the azimuthal direction, while 5 and 15 h R.A. are around the direction perpendicular to the azimuthal direction. This amplified magnetic field could be the origin of the chaotic cosmic rays. The possible correlation between cosmic ray protons and the dark-matter is guessed also.
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