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16th European Solar Physics Meeting

6–10 Sept 2021
Online
Europe/Rome timezone

Session

Plenary 3

plenary3
7 Sept 2021, 14:00
Online

Online

Conveners

Plenary 3

  • Ioannis Kontogiannis (Leibniz-Institute for Astrophysics Potsdam (AIP))

Presentation materials

Zoom link
  1. 184. What drives the hot solar corona?
    Lakshmi Pradeep Chitta (Max Planck Institute for Solar System Research)
    07/09/2021, 14:00
    Session 2 - The Solar Atmosphere: Heating, Dynamics and Coupling
    Invited talk

    The outer atmosphere of the Sun, the corona is comprised of tenuous, highly ionized plasma, that is governed by magnetic fields and is heated to more than a million Kelvin. Such hot coronal plasma is thought to be powered by numerous impulsive heating events called nanoflares. What drives these impulsive nanoflares? What role does magnetic field play in coronal heating? We address these...

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  2. 562. Solar Orbiter/EUI very wide field observations of the EUV corona.
    Frédéric Auchère (Institut d'Astrophysique Spatiale)
    07/09/2021, 14:20
    Session 2 - The Solar Atmosphere: Heating, Dynamics and Coupling
    Talk

    At 3.8°, the field of view (FOV) of the Full Sun Imager (FSI) on Solar Orbiter is by far wider than that of any previous solar EUV imager. Depending on the distance of the probe to the Sun along its orbit, this corresponds to 14 to 4 solar radii, to be compared to the 3.5 Rs of STEREO/EUVI or Proba2/SWAP. This very large field of view opens up a new discovery space into a region largely...

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  3. 192. On the dynamics of vortices in the solar atmosphere
    José Roberto Canivete Cuissa (IRSOL)
    07/09/2021, 14:35
    Session 2 - The Solar Atmosphere: Heating, Dynamics and Coupling
    Talk

    Small scale vortices in the solar atmosphere have received increasing attention in recent years. They are ubiquitous at photospheric and chromospheric levels and are a viable candidate mechanism for the exchange of waves, energy, and mass with the upper solar atmosphere.
    In order to identify and study the dynamics of these vortices, we seek a suitable mathematical criterion for which an...

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  4. 534. Curved coronal arcades: proliferation and heating of an MHD avalanche
    Dr Jack Reid (University of St Andrews)
    07/09/2021, 14:50
    Session 2 - The Solar Atmosphere: Heating, Dynamics and Coupling
    Talk

    MHD avalanches involve small, intensely localized instabilities that spread across neighbouring regions in a magnetic field.
    Cumulatively, many small events release vast amounts of stored magnetic energy.
    Straight cylindrical flux tubes, in Parker (1972)'s model of coronal loops, are liable to such avalanches: one unstable flux tube can cause instability to proliferate through reconnection,...

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  5. 509. Photospheric and coronal sources of the solar wind observed by PSP and Solar Orbiter: topological links, spatial and temporal periodicities
    Olga Panasenco (Advanced Heliophysics Inc.)
    07/09/2021, 15:05
    Session 2 - The Solar Atmosphere: Heating, Dynamics and Coupling
    Talk

    Parker Solar Probe (PSP) and Solar orbiter have made a number of important discoveries in its exploration of the inner heliosphere/outer corona. Their observation of ubiquitous large amplitude Alfvénic fluctuations, regardless of solar wind speed, in all wind streams except for narrow areas surrounding the heliospheric current sheet, together with large s-shaped inversions of the magnetic...

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