Session F: ACRs and GCRs |
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Discussion in this breakout session will focus on the observations and
interpretations of the ACR and GCR intensities during the present
unusually long, deep solar minimum. In particular, in 2009 GCR intensities
at 1 AU reached higher levels than had ever been previously directly
measured during the Space Age, while ACR intensities at 1 AU were quite
"typical", very similar to those observed 2 solar minima ago (during the
last A<0 minimum) and well below those seen during the previous (A>0)
solar minimum in 1996-97. How do these observations confirm or challenge
our ideas of energetic particle propagation and modulation in the
heliosphere? What constraints do they place on the origin of anomalous
cosmic rays? What can we learn by monitoring the rapid decline in ACR
and GCR intensities that began this year now that solar minimum modulation
conditions have finally passed? How can multi-spacecraft measurements at
1 AU (from, e.g., ACE, Wind, SoHO, STEREO) together with observations out
of the ecliptic from Ulysses and in the outer heliosphere from Voyager
contribute to addressing these questions?
Invited speakers and attendees who have expressed an interest in making a presentation (or have been encouraged to do so) are listed below. We have a total of 3 hours in this session, so there is plenty of time for discussion and additional presentations. If you would like to make a presentation, please contact the session organizers by email or at the workshop. Confirmed speakers:
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