Reuven Ramaty

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Reuven Ramaty 1937 2001
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RHESSI people

• UC Berkeley (Bob Lin)
• NASA GSFC (Brian Dennis)
• Paul Scherrer Institute (Alex Zehnder)
• Co-Is Benz, Brown, Emslie, Enome, Hudson,
  Hurford, Kosugi, Ramaty, Smith, Vilmer
  (Aschwanden? Holman? Krucker?)

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RHESSI description

• A NASA Small Explorer (the 6th SMEX)
• Spin-stabilized modulation collimator array in
  low Earth orbit
• Germanium detectors for high resolution X-ray and
  g-ray imaging spectroscopy
• Launched successfully February 6, 2002
• All data and software public-domain. The GUI
  really works.

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Three RHESSI items

• Interplanetary connection
• Gamma-ray flare (July 23, 2002)
• Late arcade development (April 21, 2002)

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Coronal connectivity via SEPs
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Slide 16
Slide 16
Courtesy of Brian Dennis
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July 23, 2002, g-ray event
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Krucker et al. 2003
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Centroids of bremsstrahlung and 2.223 MeV
emissions
Hurford et al. 2003
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April 21, 2002 slow LDE
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Gallagher et al., 2002