000003977 001__ 3977
000003977 005__ 20190129104245.0
000003977 037__ $$aPOSTER-2019-0044
000003977 100__ $$aWauters, Laurence
000003977 245__ $$aTracking of predominant periodicities evolution for PROBA2/LYRA and other long-term solar time series.
000003977 260__ $$c2018
000003977 269__ $$c2018-10-29
000003977 520__ $$aThe periodograms of the PROBA2/LYRA data show predominant periodicities comparable to the ones observed by other solar time series for the same time range. These periodicities have been found to slightly vary over time. Tracking their evolution on a long-term basis aims at identifying which periodicities are related to each other and at determining which physical processes are at their origin. A study has been made on sunspot area, for which several solar cycles of data exist and for which the periodicities are close to the ones found in LYRA (for the same time range). We used framed Lomb-Scargle periodograms to extract the periodicities and check their evolution. Several significant periodicities behave similarly and seem to be harmonically related.
000003977 594__ $$aNO
000003977 700__ $$aDominique, Marie
000003977 700__ $$aDammasch, Ingolf
000003977 700__ $$aMeftah, Mustapha
000003977 773__ $$tSDO meeting, Ghent, Belgium
000003977 8560_ $$flaurence.wauters@observatoire.be
000003977 980__ $$aCPOSTER