Space Sci. Revs., in press, 2001
Abstract:
The Anisotropy Telescopes (ATs) instrument, part of the COSPIN
experiment on board Ulysses, measures fluxes and anisotropies
of protons in the MeV range. We survey data from this instrument
throughout the Ulysses mission, with particular emphasis on
solar maximum, when large particle intensities were measured.
The only significant fluxes detected by the
ATs during solar minimum are those associated with corotating
interaction regions.
We focus on events characterised by very large
first order anisotropies, indicating beam-like streaming
along the magnetic field lines, and also on times of
unusually low and constant anisotropies.
We describe the parameters associated with these events and
put forward possible physical explanations of the extreme
anisotropies observed.
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