Hard X-ray Emission from a Flare-related Jet

Details Hard X-ray Emission from a Flare-related Jet Hard X-ray Emission from a Flare-related Jet

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008espm...122.102b&link_type=abstract

"12th European Solar Physics Meeting, Freiburg, Germany, held September, 8-12, 2008. Online at http://espm.kis.uni-freiburg.de/,

Physics

Scientific paper

We report the observation of hard X-ray emission which we attribute to a flare-related jet. The event occurred on the 22nd of August 2002 and its evolution was observed by a number of instruments. In particular we study the pre-impulsive and impulsive phase of the flare using data from RHESSI and the TRACE 195 passband. During this period RHESSI observes significant hard X-ray emission to energies as high as 50 keV in the jet. Estimates from RHESSI spectroscopy suggest a temperature of the order of approximately 20MK for this time. Radio observations from the Nobeyama Radioheliograph (NoRH) show a positive spectral index for the ejected material backing the presence of non-thermal emission. This also shows the jet to be optically thick at radio frequencies, possibly due to free-free absorption.

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