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Solar Flares, Type III Radio Bursts, CMEs, and Energetic ParticlesDespite the fact that it has been well known since the earliest observations that solar energetic particle events are well associated with solar flares it is often considered that the association is not physically significant. Instead, in large events, the particles are considered to be only accelerated at a shock driven by the coronal mass ejection (CME) that is also always present. If particles are accelerated in the associated flare, it is claimed that such particles do not find access to open field lines and therefore do not escape from the low corona. However recent work has established that long lasting type III radio bursts extending to low frequencies are associated with all prompt solar particle events. Such bursts establish the presence of open field lines. Furthermore, tracing the radio bursts to the lowest frequencies, generated near the observer, shows that the radio producing electrons gain access to a region of large angular extent. It is likely that the electrons undergo cross field transport and it seems reasonable that ions do also. Such observations indicate that particle propagation in the inner heliosphere is not yet fully understood. They also imply that the contribution of flare particles in major particle events needs to be properly addressed.
Document ID
20040031463
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Cane, H. V.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publisher: American Inst. of Physics
ISBN: 0-7354-0148
Subject Category
Astrophysics
Meeting Information
Meeting: Solar Wind Ten: Proceedings of the Tenth International Solar Wind Conference
Location: Pisa
Country: Italy
Start Date: June 17, 2002
End Date: June 22, 2002
Distribution Limits
Public
Copyright
Public Use Permitted.
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