Theoretical relations between model parameters and Metis observables for eruptive prominences and coronal mass ejections

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F25%3A00619114" target="_blank" >RIV/67985815:_____/25:00619114 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0365901" target="_blank" >https://hdl.handle.net/11104/0365901</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202453116" target="_blank" >10.1051/0004-6361/202453116</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Theoretical relations between model parameters and Metis observables for eruptive prominences and coronal mass ejections

Popis výsledku v původním jazyce

Context. We investigate the behavior of the plasma in eruptive prominences and coronal mass ejections in characteristic physical conditions. Aims. We aim to demonstrate various relations between the plasma parameters and radiation properties relevant to Solar Orbiter and Metis observations. Methods. Our method is based on 2D non-local thermodynamic equilibrium (non-LTE) modeling of moving structures that are externally illuminated from the solar disk. We have focused on temperatures below 105 K and a range of gas pressures to investigate the opacity effects in the L alpha line. Overall, we applied a large grid of isothermal and isobaric models. Results. Our results are presented in the form of various correlation plots showing relationships between the plasma parameters and radiation properties relevant to Metis observations. We also demonstrate the relative importance of radiative and collisional ionization of hydrogen and the ratio between radiative and collisional excitation of the L alpha line. Our results point to the need to carry out optically thick non-LTE modeling for specific plasma conditions. The visible light (VL) emission was also obtained for the purposes of a comparison with the Metis data.

Název v anglickém jazyce

Theoretical relations between model parameters and Metis observables for eruptive prominences and coronal mass ejections

Popis výsledku anglicky

Context. We investigate the behavior of the plasma in eruptive prominences and coronal mass ejections in characteristic physical conditions. Aims. We aim to demonstrate various relations between the plasma parameters and radiation properties relevant to Solar Orbiter and Metis observations. Methods. Our method is based on 2D non-local thermodynamic equilibrium (non-LTE) modeling of moving structures that are externally illuminated from the solar disk. We have focused on temperatures below 105 K and a range of gas pressures to investigate the opacity effects in the L alpha line. Overall, we applied a large grid of isothermal and isobaric models. Results. Our results are presented in the form of various correlation plots showing relationships between the plasma parameters and radiation properties relevant to Metis observations. We also demonstrate the relative importance of radiative and collisional ionization of hydrogen and the ratio between radiative and collisional excitation of the L alpha line. Our results point to the need to carry out optically thick non-LTE modeling for specific plasma conditions. The visible light (VL) emission was also obtained for the purposes of a comparison with the Metis data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA25-18282S" target="_blank" >GA25-18282S: Kosmické koronografy ESA s českou účastí</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

696

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

9

Strana od-do

A14

Kód UT WoS článku

001455406500002

EID výsledku v databázi Scopus

2-s2.0-105001643801