34th Solar Physics Division Meeting, June 2003
Session 18 RHESSI Results II
Poster, Wednesday, June 18, 2003, 3:30-5:00pm, Mezzanine

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[18.08] The Non-flare Solar Temperature and Emission Measure Observed by RHESSI

J. M. McTiernan (Space Sciences Lab, Univ. of California), J. A. Klimchuk (Naval Research Lab)

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.

If you would like more information about this abstract, please follow the link to http://sprg.ssl.berkeley.edu/~jimm/hessi/spd2003.html. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: jimm@ssl.berkeley.edu

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