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  1. Book ; Online: Magnetohydrodynamic Waves in the Solar Atmosphere: Heating and Seismology

    Van Doorsselaere, Tom / Nakariakov, Valery M. / Li, Bo / Antolin, Patrick

    2020  

    Keywords Science: general issues ; Astronomy, space & time ; solar physics ; MHD waves ; solar corona ; solar coronal seismology ; coronal heating
    Size 1 electronic resource (170 pages)
    Publisher Frontiers Media SA
    Document type Book ; Online
    Note English ; Open Access
    HBZ-ID HT021231423
    ISBN 9782889635252 ; 2889635252
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  2. Article ; Online: Polarisation of decayless kink oscillations of solar coronal loops.

    Zhong, Sihui / Nakariakov, Valery M / Kolotkov, Dmitrii Y / Chitta, Lakshmi Pradeep / Antolin, Patrick / Verbeeck, Cis / Berghmans, David

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 5298

    Abstract: Decayless kink oscillations of plasma loops in the solar corona may contain an answer to the enigmatic problem of solar and stellar coronal heating. The polarisation of the oscillations gives us a unique information about their excitation mechanisms and ... ...

    Abstract Decayless kink oscillations of plasma loops in the solar corona may contain an answer to the enigmatic problem of solar and stellar coronal heating. The polarisation of the oscillations gives us a unique information about their excitation mechanisms and energy supply. However, unambiguous determination of the polarisation has remained elusive. Here, we show simultaneous detection of a 4-min decayless kink oscillation from two non-parallel lines-of-sights, separated by about 104
    Language English
    Publishing date 2023-09-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-41029-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book ; Online: Observational Signatures of Waves and Flows in the Solar Corona

    De Moortel, Ineke / Antolin, Patrick / Van Doorsselaere, Tom

    2015  

    Abstract: Propagating perturbations have been observed in extended coronal loop structures for a number of years, but the interpretation in terms of slow (propagating) magneto-acoustic waves and/or as quasi-periodic upflows remains unresolved. We used forward- ... ...

    Abstract Propagating perturbations have been observed in extended coronal loop structures for a number of years, but the interpretation in terms of slow (propagating) magneto-acoustic waves and/or as quasi-periodic upflows remains unresolved. We used forward-modelling to construct observational signatures associated with a simple slow magneto-acoustic wave or periodic flow model. Observational signatures were computed for the 171 {\AA} Fe ix and the 193 {\AA} Fe xii spectral lines. Although there are many differences between the flow and wave models, we did not find any clear, robust observational characteristics that can be used in isolation ( i.e. that do not rely on a comparison between the models). For the waves model, a relatively rapid change of the average line widths as a function of (shallow) line-of-sight angles was found, whereas the ratio of the line width amplitudes to the Doppler velocity amplitudes is relatively high for the flow model. The most robust observational signature found is that the ratio of the mean to the amplitudes of the Doppler velocity is always higher than one for the flow model. This ratio is substantially higher for flows than for waves, and for the flows model used in the study is exactly the same in the 171 {\AA} Fe ix and the 193 {\AA} Fe xii spectral lines. However, these potential observational signatures need to be treated cautiously because they are likely to be model-dependent.
    Keywords Astrophysics - Solar and Stellar Astrophysics
    Subject code 551
    Publishing date 2015-10-05
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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