9th Metis Workshop

Session

Session 5

25 Jan 2024, 15:00

Conveners

Session 5

• Giampiero Naletto (Istituto Nazionale di Astrofisica (INAF))

26. CMEs eruptions with very intense UV emission observed by the Metis coronagraph on-board Solar Obiter

Giuliana Russano (Istituto Nazionale di Astrofisica (INAF))

25/01/2024, 15:00

Oral

Metis, the coronagraph on board Solar Orbiter (SolO), offers the unique capability to simultaneously track the evolution of coronal mass ejections and solar eruptions in the ultraviolet H I Ly-α line and polarized visible light. This comprehensive analysis allows for valuable insights into the dynamics, time evolution, mass contents, and outflow propagation velocity of plasma in the expanding...

29. First Metis Detection of the Helium D3 Line Polarisation in a Large Eruptive Prominence

Petr Heinzel (Astronomical Institute of the Czech Academy of Sciences, Ondˇrejov, Czech Republic)

25/01/2024, 15:15

Oral

Metis on board of Solar Orbiter is the space coronagraph developed by an Italian-German-Czech consortium. It is capable of observing solar corona and various coronal structures in the visible-light (VL) and UV (hydrogen Lyman $\alpha$) channels simultaneously for the first time. Here we present observations of a large eruptive prominence of April 25-26, 2021,
in the VL, taken during the...

11. Revealing the differences between two eruptive events observed by Metis on October 28, 2021

Yara De Leo (Max Planck for Solar System Research, Goettingen, Germany)

25/01/2024, 15:30

Oral

On October 28, 2021 the first X-class solar flare of Solar Cycle 25 occurred in active region NOAA AR 12887 with a peak at 15:35 UT, producing the rare event of ground-level enhancement of the solar relativistic proton flux and a global extreme ultraviolet (EUV) wave, along with a fast halo coronal mass ejection (CME) as seen from Earth's perspective. A few hours before the flare, a slower CME...

15. First multi-view observations of an erupting prominence in the UV Lyman-alpha line with SolO/Metis and ASO-S/LST instruments

Shuting Li (Purple Mountain Observatory/INAF-Turin Astrophysics Observatory)

25/01/2024, 15:45

Oral

A prominence eruption associated with a limb CME were observed on April 12, 2023 by the multi-channel Metis Coronagraph on-board the Solar Orbiter mission. The prominence, seen in the Metis UV Lyman-alpha images as a very bright and elongated arch propagating southward, is instead much weaker in Metis visible light (VL) images. The elongated arch splits into several blobs and becomes fainter...

25. Joint investigation of coronal mass ejections with Metis observations, numerical simulations and in situ spacecraft data

Gaetano Zimbardo (University of Calabria, Rende, Italy and INAF, Italy)

25/01/2024, 16:00

Oral

A new research activity has been started which aims at a comprehensive study of coronal mass ejections (CMEs) and their interplanetary counterpart, including the study of the CME driven shock and the associated energetic particles. This activity is going to use Solar Orbiter/Metis, SOHO/LASCO, and STEREO/COR1 and COR2 coronagraphic data for imaging CMEs in the corona; these observations will...

30. Theoretical relations between the plasma parameters and Metis observables for eruptive prominences and CMEs

Sonja Jejčič (University of Ljubljana, FMF)

25/01/2024, 16:15

Oral

The Metis coronagraph simultaneously detects the integrated intensity of the hydrogen Lyman $\alpha$ line and the continuum intensity of the visible light, over the entire field of view. We focus on 2D non-LTE modeling of eruptive prominences or cores of CMEs up to eight solar radii, using a range of flow velocities to account for the Doppler dimming effect. We consider isothermal and isobaric...