# Seminars / Webinars

**Tuesday 24 May 2022, 12:00** (EET)

### Validation of a wave heated 3D MHD coronal-wind model using Polarized Brightness and EUV observations

**Susanna Parenti
**Institut d'Astrophysique Spatiale, France

Abstract:The 3D MHD global modeling is a powerful tool to test all the possible candidate physical processes responsible for the formation and evolution of the corona and heliosphere. To fully understand the possible role of each of these mechanisms , we need a validation process where the output from the simulations is quantitatively compared to the observational data. In this work, we present the results from our validation process applied to the wave turbulence driven 3D MHD corona-wind model WindPredict-AW. At this stage of the model development, we focus the work to the coronal regime in quiescent condition. We analyze three simulations results, which differ by the boundary values. We use the 3D distributions of density and temperature, output from the simulations at the time of around the first Parker Solar Probe perihelion (during minimum of the solaractivity), to synthesize both extreme ultraviolet (EUV) and white light polarized (WL pB) images to reproduce the observed solar corona. For these tests, we selected AIA 193 A, 211 A and 171 A EUV emissions, MLSO K-Cor and LASCO C2 pB images obtained the 6 and 7 November 2018. We then make quantitative comparisons of the disk and off limb corona. We show that our model is able to produce synthetic images comparable to those of the observed corona.

### Past webinar recordings are available here

**Past Webinars**

Date |
Speaker |
Title |

17 May 2022 | Konstantina ZouloumiResearch Center for Astronomy & Applied Mathematics &
Department of Astrophysics, Astronomy and Mechanics, University of Athens |
NAAF determination of the multiple pattern speeds and the manifolds in a simulation of a barred spiral galaxy (Watch here) |

3 May 2022 | Antonios TsokarosUniversity of Illinois at Urbana-Champaign, USA |
Numerical general relativity and astrophysics in the era of multimessenger astronomy (Watch here) |

18 Apr 2022 | Stavros PastrasResearch Center for Astronomy and Applied Mathematics, Academy of Athens & Department of Physics, Section of Astrophysics, Astronomy and Mechanics, University of Athens |
Gasflows in barred spiral galaxies by means of two different hydrocodes |

12 Apr 2022 | Spyridon AleiferisUK Atomic Energy Authority, Culham Science Centre, Abingdon, UK |
Taming of the stars: how to control fusion plasmas (Watch here) |

31 Mar 2022 | Evangelos MelasUniversity of Athens, Department of Economics |
Asymptotic symmetries and representation theory in General Relativity in three and four space-time dimensions (Watch here) |

29 Mar 2022 | Georgios DoulisInstitute of Theoretical Physics, University of Jena, Germany |
Entropy as shock indicator in neutron star merger simulations (Watch here) |

15 Mar 2022 | Dimitris StamatellosJeremiah Horrocks Institute for Mathematics, Physics & Astronomy, University of Central Lancashire, Preston, UK |
The formation and evolution of disc-instability planets (Watch here) |

10 Mar 2022 | Damianos IosifidisAristotle University of Thessaloniki |
Perfect Hyperfluids (Watch here) |

8 Mar 2022 | Antonios NathanailUniversity of Athens, Department of Physics |
Still observing light from the binary neutron star merger first detected in 2017 (Watch here) |

3 Mar 2022 | Karnesis NikolaosAristotle University of Thessaloniki, School of Physics |
Detecting Gravitational Waves from space (Watch here) |

22 Feb 2022 | Athanasios C. TzemosResearch Center for Astronomy and Applied Mathematics of the Academy of Athens |
Chaos and Bohmian Quantum Potential (Watch here) |

15 Feb 2022 | Ioannis ContopoulosResearch Center for Astronomy and Applied Mathematics of the Academy of Athens |
Quantum Interference: reality or an illusion of the detector? (Watch here) |

8 Feb 2022 | Charis AnastopoulosDepartment of Physics, University of Patras |
Gravitational effects in macroscopic quantum systems (Watch here) |

1 Feb 2022 | Konstantinos N. GourgouliatosDepartment of Physics, University of Patras |
Magnetic Field Evolution in Neutron Star Crusts: Hall effect and beyond ( Watch here) |

18 Jan 2022 | Athanasios C. TzemosResearch Center for Astronomy and Applied Mathematics of the Academy of Athens |
Born's rule in the case of 3 entangled Bohmian qubits (Watch here) |

11 Jan 2022 | Constantinos KalapotharakosUniversity of Maryland and Astrophysics Science Division, NASA/Goddard Space Flight Center, USA |
Interpreting the Thermal and Non-Thermal High-Energy Emission in Multipolar Field Pulsar Magnetospheres (Watch here) |

14 Dec 2021 | Thorsten NaabMax-Planck-Institute for Astrophysics, Garching, Germany |
The GRIFFIN project - towards realistic simulations of galactic star cluster populations (Watch here) |

7 Dec 2021 | Ivan MinchevLeibniz-Institut für Astrophysik Potsdam (AIP) |
Modeling the Galactic disk in the age of Gaia (Watch here) |

30 Nov 2021 | Edoardo LegnaroResearch Center for Astronomy and Applied Mathematics of the Academy of Athens and University of Thessaloniki |
Analytic Theory for Secular Lunisolar Resonances (Watch here) |

9 Nov 2021 | Dimitri A. GadottiESO – European Southern Observatory |
Nuclear discs in external galaxies and the Milky Way: building "bulges" without mergers (Watch here) |

26 Oct 2021 | Demosthenes KazanasNASA Goddard Space Flight Center, Corresponding Member of the Academy of Athens |
Gravity beyond Einstein? Yes, but in which direction?
(Watch here) |

13 Jul 2021 | Dimitris ChristodoulouUniversity of Massachusetts |
Major-Body Clustering in the Solar System (Watch here) |

24 Jun 2021 | Panos A. Patsis Research Center for Astronomy and Applied Mathematics of the Academy of Athens |
Building blocks of 3D, X-shaped bulges and thick spirals ( Watch here) |

8 Jun 2021 | George Contopoulos Research Center for Astronomy and Applied Mathematics of the Academy of Athens |
Μια συνοπτική έκθεση της Φιλοσοφίας της Φυσικής και των Μαθηματικών ( Διαθέσιμη μαγνητοσκοπημένη) |

1 Jun 2021 | Christos Efthymiopoulos Department of Mathematics Tullio Levi-Civita, University of Padua( Work in collaboration with Rita Mastroianni) |
Secular dynamics for exoplanetary systems with two planets in mutually inclined orbits ( Watch here) |

13 May 2021 | Athanasios C. Tzemos Research Center for Astronomy and Applied Mathematics of the Academy of Athens |
Born's Rule in the case of two entangled Bohmian qubits
( Watch here) |

22 Apr 2021 | Costis GontikakisResearch Center for Astronomy and Applied Mathematics of the Academy of Athens |
Study of the emission measure during a solar flare observed with IRIS spectrograph (Watch here) |

**Seminars in 2020**

Date |
Speaker |
Title |

3 Mar 2020 | Anastasios Anastasiadis National Observatory of Athens / IAASARS |
Unveiling Current Challenges in Space Weather Forecasting: The SAWS-ASPECS tool |

25 Feb 2020 | Vasileios BasiosUniversité Libre de Bruxelles, Interdisciplinary Centre for Nonlinear Phenomena & Complex Systems (Cenoli-ULB) & Département de Physique des Systèmes Complexes et Mécanique Statistique |
Labyrinth Chaos: Conservative, non-Hamiltonian Chaos without Attractors |

18 Feb 2020 | Elias KoulouridisNational Observatory of Athens / IAASARS |
Tracing the Universe: X-ray surveys and cosmology |

11 Feb 2020 | Costis GontikakisResearch Center for Astronomy and Applied Mathematics of the Academy of Athens |
Moss, the trace of hot loops in EUV, an ongoing research |

28 Jan 2020 | Athanassios C. TzemosResearch Center for Astronomy and Applied Mathematics of the Academy of Athens |
Chaos and ergodicity in the trajectories of two entangled Bohmian qubits |

21 Jan 2020 | George DimopoulosNational Observatory of Athens |
Coronal properties of Sy I Active Galaxies |

14 Jan 2020 | Panos A. PatsisResearch Center for Astronomy and Applied Mathematics of the Academy of Athens |
Some open issues in Galactic Dynamics and the contribution of Image Processing in resolving them |

A list of all previous seminars from 2008 to 2020 is available here.