3337 20180109144914.0 CTALK-2018-0002 Wauters, Laurence Eruptive phenomena observed in LYRA lyman-alpha 2017 2017-08-22 Marie Dominique presented this talk, Laurence Wauters was under seak leave Lyman-alpha (121.6 nm) is an optical thick line mostly formed in the chromosphere. Although one of the strongest lines of the solar spectrum, there are very few reports of solar flare signatures in Lyman-alpha and the few observations available differ significantly in shape, time duration and amplitude. Consequently, the fraction of non-thermal energy deposited during solar flares in this wavelength is still subject to discussion. The LYRA experiment is a radiometer on board the PROBA2 spacecraft launched in 2009. LYRA is composed of three identical units (one nominal, two backups), which each includes four distinct broadband channels, among which one covering Lyman-alpha. Despite the fact that the LYRA Lyman-alpha signal has degraded quickly at the beginning of the mission in the nominal channel, it observed about ten flares. Additionally, one more flare was observed in one of the backup channels. In this talk, we will analyse this particular flare profile and compare it to other instruments including Goes-15, EVE/MEGS-P, LYRA Zirconium channel. PROBA2/ PROBA2/ PROBA2 NO LYRA Flare Filament eruption Dominique, Marie Dammasch, Ingolf Kretzschmar, Matthieu 48th SPD meeting, Portland laurence.wauters@observatoire.be http://adsabs.harvard.edu/abs/2017SPD....4810004W Contributed CTALKCONT