Solar Orbiter Radio and Plasma Waves - Time Domain Sampler: In-flight performance and first results

0552647 - ASÚ 2022 RIV FR eng J - Článek v odborném periodiku
Souček, J. - Píša, D. - Kolmašová, I. - Uhlíř, L. - Lán, R. - Santolík, O. - Krupař, V. - Krupařová, O. - Baše, J. - Maksimovic, M. - Bale, S. D. - Chust, T. - Khotyaintsev, Y. V. - Krasnoselskikh, V. - Kretzschmar, M. - Lorfèvre, E. - Plettemeier, D. - Steller, M. - Štverák, Štěpán - Vaivads, A. - Vecchio, A. - Bérard, D. - Bonnin, X.
Solar Orbiter Radio and Plasma Waves - Time Domain Sampler: In-flight performance and first results.
Astronomy & Astrophysics. Roč. 656, December (2021), č. článku A26. ISSN 0004-6361. E-ISSN 1432-0746
Institucionální podpora: RVO:67985815
Klíčová slova: plasmas * solar wind * waves
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 6.240, rok: 2021
Způsob publikování: Open access

This article presents the first data from the RPW-TDS receiver and discusses the in-flight performance of the instrument and, in particular, the on-board wave and dust detection algorithm. We present the TDS data products and its scientific operation. We demonstrate the content of the dataset on several examples. In particular, we study the distribution of solar Langmuir waves in the first year of observations and one Type III burst event. The on-board detection algorithm is described in detail in this article and classifies the observed waveform snapshots, identifying plasma waves and dust impacts based on the ratio of their maximum amplitude to their median and on the spectral bandwidth. The algorithm allows TDS to downlink the most scientifically relevant waveforms and to perform an on-board statistical characterization of the processed data. The detection algorithm of TDS is shown to perform very well in its detection of plasma waves and dust impacts with a high accuracy. The initial analysis of statistical data returned by TDS shows that sporadic Langmuir waves that are not associated with Type III events are routinely observed in the inner heliosphere, with a clear increase in occurrence rate closer to the Sun. We also present an example of RPW observations during an encounter of the source region of a Type III burst, which exploits the on-board calculated histograms data.
Trvalý link: http://hdl.handle.net/11104/0327764