Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.2905k&link_type=abstract
American Astronomical Society Meeting 210, #29.05; Bulletin of the American Astronomical Society, Vol. 39, p.138
Astronomy and Astrophysics
Astronomy
Scientific paper
We present multi-wavelength observations of low level heating in an erupting prominence observed in the UV and EUV over a wide range of temperatures and wavelengths by SOHO's SUMER instrument, TRACE and also in H-alpha by the Yunnan Astronomical Observatory. The eruption occurred on 2004 April 30. The heating is relatively mild, leading only to the ionization of neutral hydrogen and probably helium. It is also localized, occurring along the bottom edge of the erupting prominence and in a kink-like feature in the prominence. The heating is revealed as a decrease in the Lyman absorption. This decrease results in an apparent increase in emission in all the lines observed by SUMER, especially those formed at temperatures ˜10^5 K. However, this is due to the disappearance of cooler absorbing material in the prominence rather than an increase in these higher temperature species.
This project was funded by the NASA SEC GI RTOP 955518.02.01.01.15 and NASA awards NNG06EA14I and NNH06CD24C.
Kucera Therese A.
Landi Enrico
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