SOHO Flare Analysis of the Sun
SOHO's Solar Ultraviolet Measurements of Emitted Radiation (SUMER)
- Spectral Analysis of Flare (Courtesy ESA/NASA)
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The above spectra show the corona dynamics above a flare that occurred on 11th May 2001. The green image to the right is an EIT image of the event, the white line showing the position of the SUMER slit, aligned about 70,000km above the site of the flare.
The three horizontal spectral bands, with time increasing from top to bottom and temperature decreasing from left to right, provide detailed beakdown of the event which consisted of an ejection of high temperature plasma (8 million degrees) followed by a long relaxation phase during which postflare loops form with a temperature of about 1 million degrees. Throughout there is an intermittent ejection of cold plasma from the chromosphere high into the corona. |
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