Počet záznamů: 1
First Metis Detection of the Helium D3 Line Polarization in a Large Eruptive Prominence
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SYSNO ASEP 0580065 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název First Metis Detection of the Helium D3 Line Polarization in a Large Eruptive Prominence Tvůrce(i) Heinzel, Petr (ASU-R) RID, ORCID
Jejčič, Sonja (ASU-R)
Štěpán, Jiří (ASU-R) RID, ORCID
Berlicki, Arkadiusz (ASU-R) RIDCelkový počet autorů 27 Číslo článku L10 Zdroj.dok. Astrophysical Journal Letters. - : Institute of Physics Publishing - ISSN 2041-8205
Roč. 957, č. 1 (2023)Poč.str. 7 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova solar prominences ; coronagraphic imaging ; solar corona Obor OECD Astronomy (including astrophysics,space science) CEP GA22-34841S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora ASU-R - RVO:67985815 UT WOS 001096160500001 EID SCOPUS 85177085342 DOI 10.3847/2041-8213/acff62 Anotace Metis on board 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 Lyα) channels simultaneously for the first time. Here we present observations of a large eruptive prominence on 2021 April 25-26, in the VL, taken during the mission cruise phase, and demonstrate that apart from the broadband continuum emission, which is due to the Thomson scattering on prominence electrons, we detect a significant radiation in the neutral-helium D3 line (587.6 nm), which lies within the Metis VL passband. We show how the prominence looks like in Stokes I, Q, and U. We consider two extreme cases of the prominence magnetic field, and we separate the Stokes I and Q signals pertinent to Thomson scattering and to the D3 line. The degree of linear polarization of the D3 line (both Q and U) indicates the presence of the prominence magnetic field, hence Metis can serve as a magnetograph for eruptive prominences located high in the corona. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2024 Elektronická adresa https://hdl.handle.net/11104/0348842
Počet záznamů: 1