Simultaneous SoHO and TRACE Observations of the Solar Atmosphere

Details Simultaneous SoHO and TRACE Observations of the Solar Atmosphere Simultaneous SoHO and TRACE Observations of the Solar Atmosphere

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsp31c..04t&link_type=abstract

American Geophysical Union, Spring Meeting 2008, abstract #SP31C-04

Physics

7507 Chromosphere, 7549 Ultraviolet Emissions

Scientific paper

From May 24-27, 2004, the Transition Region and Coronal Explorer (TRACE) and the Solar Ultraviolet Measurement of Emitted Radiation (SUMER) instrument aboard Solar and Heliospheric Observer (SoHO) simultaneously observed the northwest and southwest regions of the sun. Through SUMER's measurements, we made detailed velocity measurements from different layers of the solar atmosphere corresponding to different temperatures and emission lines. Original programs written in Interactive Data Language (IDL) revealed maximum and minimum velocities within the region populated by spicules from 2,000-10,000 km above the solar limb. These values were compared to TRACE observations taken in 1600 Å, which revealed a strong coronal loop feature with a strong blueshifted Si II (1533.4 Å) emission line and a simultaneously strong redshifted C IV (1548.2 Å) emission line suggesting differing flows of material at different temperatures within the loop feature. In this paper, we seek to further our knowledge of coronal loop evolution and dynamics, specifically the observed differing temperature flows. We thank Ingolf Dammasch for his expertise. Obtaining the data was supported in part by NASA grant NNG04GK44G and the current reduction work is supported in part by NASA grant NNM07AA01G from NASA's Marshall Space Flight Center.

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