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Showing 1–8 of 8 results
Advanced filters: Author: Marco Stangalini Clear advanced filters

  • Why the outer regions of the solar atmosphere are much hotter than the underlying surface is a long-standing question. New high-resolution observations revise the role of waves in the energy transfer and offer an insight into the processes at play.

    • Marco Stangalini
    News & Views
    Nature Astronomy
    Volume: 7, P: 761-762

  • Spectropolarimetric observations of a solar pore at high temporal and spatial resolution identify the presence of magnetic field torsional oscillations. Simulations suggest that such oscillations are triggered by a photospheric kink mode, which can contribute substantially to upward energy transport within the solar atmosphere.

    • Marco Stangalini
    • Robertus Erdélyi
    • Marianna B. Korsós
    Research
    Nature Astronomy
    Volume: 5, P: 691-696

  • The IRIS spectrograph observed upward ‘pseudo-shocks’ (shocks exhibiting a discontinuity only in plasma density) over an active region of the Sun. Modelling shows that such pseudo-shocks contribute significantly to coronal heating and mass transport.

    • Abhishek Kumar Srivastava
    • Krzysztof Murawski
    • Bhola N. Dwivedi
    Research
    Nature Astronomy
    Volume: 2, P: 951-956

  • Co-existence of several magnetohydrodynamic oscillations modes on the Sun were predicted earlier. Here, the authors show large-scale coherent oscillations in a sunspot, with a spectrum different than solar global acoustic oscillations, incorporating a superposition of many resonant wave modes.

    • M. Stangalini
    • G. Verth
    • C. D. MacBride
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-9

  • Waves are ubiquitous in nature and occur across various scales and settings. In this Primer, Jafarzadeh et al. discuss techniques for preprocessing and analysing waves, including information on choosing the appropriate methods based on wave properties, and present worked examples using synthetic datasets.

    • Shahin Jafarzadeh
    • David B. Jess
    • Nitin Yadav
    Reviews
    Nature Reviews Methods Primers
    Volume: 5, P: 1-23

  • Spectropolarimetric data combined with high-resolution numerical simulations reveal a resonance cavity above a highly magnetic sunspot. This technique conclusively determines the three-dimensional structure of solar active regions from relatively commonplace two-dimensional data.

    • David B. Jess
    • Ben Snow
    • Damian J. Christian
    Research
    Nature Astronomy
    Volume: 4, P: 220-227