Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..899..133a&link_type=abstract
SIXTH INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION. AIP Conference Proceedings, Volume 899, pp. 133-134 (2007).
Astronomy and Astrophysics
Astrophysics
Gravitational Radiation, Magnetic Fields, And Other Observations, Fundamental Aspects Of Astrophysics
Scientific paper
The KEP/EPAC instrument, on board Ulysses spacecraft, measures directional intensities of interplanetary energetic protons and ions. We analyze Compton-Getting corrected data received from the beginning of the year 1991 to the end of 2000 and we also perform statistical analysis for the observed angle between first-order anisotropy of particle distribution and interplanetary magnetic field. The results show that the energetic particle's anisotropy is mostly in the direction perpendicular to the magnetic field, indicating a diffusion across the magnetic field lines. A strong correlation is found between the perpendicular to the magnetic field streaming of protons and ions, in the energy range of MeV, and the solar wind velocity. This correlation is simply interpreted in terms cross-field particle diffussion in the presence of an ambient plasma density gradient.
Alevizos A.
Kakouris Alexandros
Moussas Xenophon
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