Regularized electron flux spectra in the 2002 July 23 solar flare

Piana, M., Massone, A. M., Kontar, E. P. , Emslie, A. G., Brown, J. C. and Schwartz, R. A. (2003) Regularized electron flux spectra in the 2002 July 23 solar flare. Astrophysical Journal, 595(2), L127 -L130. (doi: 10.1086/378171)

Abstract

By inverting the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) hard X-ray photon spectrum with the Tikhonov regularization algorithm, we infer the effective mean electron source spectrum for a time interval near the peak of the 2002 July 23 event. This inverse approach yields the smoothest electron flux spectrum consistent with the data while retaining real features, such as local minima, that cannot be found with forward model-fitting methods that involve only a few parameters. A significant dip in the recovered mean source electron spectrum near E = 55 keV is noted, and its significance briefly discussed.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Kontar, Professor Eduard and Brown, Professor John and Piana, Professor Michele and Massone, Dr Anna
• Authors: Piana, M., Massone, A. M., Kontar, E. P., Emslie, A. G., Brown, J. C., and Schwartz, R. A.
• Subjects: Q Science > QB Astronomy; Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Astrophysical Journal
• Publisher: American Astronomical Society
• ISSN: 0004-637X
• ISSN (Online): 1538-4357
• Published Online: 08 September 2003