Astronomy and Astrophysics – Astronomy
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.1808m&link_type=abstract
American Astronomical Society, SPD meeting #34, #18.08; Bulletin of the American Astronomical Society, Vol. 35, p.841
Astronomy and Astrophysics
Astronomy
Scientific paper
Since RHESSI was launched in February 2002, it has observed thousands of solar flares. It also observes solar emission above 3 keV when there are no observeable flares present. In this work we present measurements of the non-flare Temperature and Emission Measure for the period from October 2002 through May 2003. Preliminary results indicate that the temperature is relatively stable in the 6 - 8 MK range (this is not surprising considering that RHESSI cannot reliably measure temperatures less than about 5 MK). The emission measure varies in the range from approximately 1.0e49 to 1.0e50, with higher values associated with periods of more solar activity.
Since RHESSI is an imaging spectrometer, we will locate the source of the emission when possible. We also will discuss comparisons with TRACE and SXI data, and the possiblilty of measuring the Differential Emission Measure for the range from 1 MK to 10 MK, using the multiple data sets.
Klimchuk James A.
McTiernan James M.
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