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16th European Solar Physics Meeting

6–10 Sept 2021
Online
Europe/Rome timezone

Session

Plenary 4

plenary4
7 Sept 2021, 15:40
Online

Online

Conveners

Plenary 4

  • Andrew Hillier (University of Exeter)

Presentation materials

Zoom link
  1. 116. Coronal spectroscopy of pre-flare and active regions
    Louise Harra (PMOD/WRC and ETH-Zurich)
    07/09/2021, 15:40
    Session 2 - The Solar Atmosphere: Heating, Dynamics and Coupling
    Invited talk

    Spectroscopy of active regions reveals details of physical processes through measurement of a variety of plasma parameters. The Hinode EUV Imaging spectrometer (EIS) and the NASA IRIS instruments continue to provide spectroscopy from the chromosphere through to the corona. In 2020 the Solar Orbiter mission launched with the SPICE spectrometer onboard. Plans are well underway for a new...

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  2. 542. Observational and numerical characterization of a wave-like front propagating along a coronal fan
    Valeria Sieyra (KU Leuven)
    07/09/2021, 16:00
    Session 3 - Fundamental Plasma Processes in the Solar Atmosphere: Magnetic Reconnection, Waves, Emission, Particle Acceleration
    Talk

    On 2011 July 6 EUV channels of AIA instrument onboard SDO detected a recurrent, arc-shaped intensity disturbance over an active region. The intensity disturbance fronts were observed to propagate along a coronal loop bundle rooted in a small area of the dark umbra of the sunspot. Neither signatures of flare activity nor of a coronal mass ejection event were observed in association with the...

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  3. 258. Kink instability of jets in the solar atmosphere
    Teimuraz Zaqarashvili
    07/09/2021, 16:15
    Session 3 - Fundamental Plasma Processes in the Solar Atmosphere: Magnetic Reconnection, Waves, Emission, Particle Acceleration
    Talk

    We studied the kink instability of triangular jets sandwiched between magnetic tubes/slabs and its possible connection to observed properties of the jets in the solar atmosphere. A dispersion equation governing the kink perturbations is obtained through matching of analytical solutions at the jet boundaries. The equation is solved analytically and numerically for different parameters of jets...

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  4. 539. Direct observational indications of wavelike disturbances in MBP tracks
    Juan Pablo Maldonado (Universidad Nacional de Colombia)
    07/09/2021, 16:30
    Session 3 - Fundamental Plasma Processes in the Solar Atmosphere: Magnetic Reconnection, Waves, Emission, Particle Acceleration
    Talk

    Magnetic Bright Points (MBPs) are small-scale solar atmospheric structures of highly concentrated magnetic fields that can be studied in ever more details thanks to current high precision measurements and a strong theoretical framework greatly supported by Magnetohydrodynamic (MHD) simulations and its analysis. In this study, we consider a large dataset taken from the HINODE mission from two...

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  5. 123. Whistler instability driven by the sunward electron deficit in the solar wind: High-cadence Solar Orbiter observations
    Laura Bercic (Mullard Space Science Laboratory, UCL)
    07/09/2021, 16:45
    Session 3 - Fundamental Plasma Processes in the Solar Atmosphere: Magnetic Reconnection, Waves, Emission, Particle Acceleration
    Talk

    Solar wind electrons exhibit complex electron velocity distribution functions (VDFs) shaped by expansion, Coulomb collisions, and field-particle interactions. We investigate how the suprathermal electron deficit in the anti-strahl direction, which was recently discovered in the near-Sun solar wind, drives a kinetic instability and creates whistler waves with wave vectors that are...

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