Simultaneous H and K Caii, h and k Mgii, Lαand LβHiprofiles of the April 15, 1978 solar flare observed with the OSO-8/L.P.S.P. experiment
✍ Scribed by P. Lemaire; M. Choucq-Bruston; J. -C. Vial
- Book ID
- 104645398
- Publisher
- Springer
- Year
- 1984
- Tongue
- English
- Weight
- 886 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0038-0938
No coin nor oath required. For personal study only.
✦ Synopsis
Solar flare observations have been performed with the multichannel LP.S.P. experiment on board OSO-8 NASA Satellite. Simultaneous H and K CaiI, h and k MgII, Let and Lfl HI profiles have been recorded on the plage just before the flare, during the flare onset and relaxation phases. The different behaviour of line profiles and intensities during the flare is evidenced and indicates a downward propagation with relaxation times increasing from the upper part to the lower part of the chromosphere related to line formation processes. Using the He observed profile, an upper limit of 8 • 1013 cm-s is derived for the electron density.