Analysis of RHESSI flares using a radio astronomical technique

E. J. Schmahl, R. L. Pernak, G. J. Hurford, J. Lee, S. Bong

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


We have used Ramaty High Energy Solar Spectroscopic Imager (RHESSI) modulation profiles in the 25∈-∈300 keV range to construct high-fidelity visibilities of 25 flares having at least two components. These hard X-ray visibilities, which are mathematically identical to the visibilities of radio imaging, were input to software developed for mapping solar flares in the microwave domain using the Maximum Entropy Method (MEM). We compared and contrasted the MEM maps with Clean and Pixon maps made with RHESSI software. In particular, we assessed the reliability of the maps and their morphologies for future investigations of the symmetry of bipolar electron beaming in the sample set.

Original languageEnglish (US)
Pages (from-to)241-252
Number of pages12
JournalSolar Physics
Issue number2
StatePublished - Feb 2007

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Image processing
  • Instruments
  • Numerical methods
  • Sun: X-rays
  • Sun: flares


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