RHESSI hard x-ray imaging spectroscopy of the large gamma-ray flare of 2002 July 23

Emslie, A.G., Kontar, E.P., Krucker, S. and Lin, R.P. (2003) RHESSI hard x-ray imaging spectroscopy of the large gamma-ray flare of 2002 July 23. Astrophysical Journal Letters, 595(2), L107-L110. (doi:10.1086/378931)

Full text not currently available from Enlighten.

Publisher's URL: http://dx.doi.org/10.1086/378931

Abstract

We present Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) hard X-ray images in different energy bands for the large X-class flare of 2002 July 23; these images are used to construct spatially resolved hard X-ray spectra for each of four prominent features: a bright, soft source high in the corona, two localized, hard footpoints in opposite polarity magnetic regions that show highly correlated flux and spectral variations in time, and a third footpoint bounded by the other three sources. The power-law spectral indices of the two correlated footpoints differ by ~0.3-0.4, which may be the result of differing column densities from the electron source.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kontar, Professor Eduard
Authors: Emslie, A.G., Kontar, E.P., Krucker, S., and Lin, R.P.
Subjects:Q Science > QB Astronomy
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Astrophysical Journal Letters
ISSN:2041-8205
ISSN (Online):2041-8213

University Staff: Request a correction | Enlighten Editors: Update this record