Pre-eruption energy release:

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Pre-eruption energy release

• Tether or not?

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Farnik et al. 2003
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Tether-cutting?

• September 24, 2001 (Farnik et al.) consistent
  with non-thermal events in the early activation
  stage of an X-class flare
• RHESSI July 23, 2002 data give an entirely
  different picture (see ApJL special issue)