First polar observations of the fast solar wind with the Metis Solar Orbiter coronagraph: Role of 2D turbulence energy dissipation in the wind acceleration

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00571138" target="_blank" >RIV/67985815:_____/23:00571138 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0342430" target="_blank" >https://hdl.handle.net/11104/0342430</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202245759" target="_blank" >10.1051/0004-6361/202245759</a>

Result language

angličtina

Original language name

First polar observations of the fast solar wind with the Metis Solar Orbiter coronagraph: Role of 2D turbulence energy dissipation in the wind acceleration

Original language description

This Letter reports the first estimate of the expansion rate of polar coronal flows performed by the Metis coronagraph on board Solar Orbiter. By exploiting simultaneous measurements in polarized white light and ultraviolet intensity of the neutral hydrogen Lyman-α line, it was possible to extend observations of the outflow velocity of the main component of the solar wind from polar coronal holes out to 5.5 R⊙, the limit of diagnostic applicability and observational capabilities. We complement the results obtained with analogous polar observations performed with the UltraViolet Coronagraph Spectrometer on board the SOlar and Heliospheric Observatory during the previous full solar activity cycle, and find them to be satisfactorily reproduced by a magnetohydrodynamic turbulence model.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GA22-34841S" target="_blank" >GA22-34841S: Science with Solar Orbiter: Focusing on eruptive processes</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Volume of the periodical

670

Issue of the periodical within the volume

February

Country of publishing house

FR - FRANCE

Number of pages

6

Pages from-to

L18

UT code for WoS article

000936621100008

EID of the result in the Scopus database

2-s2.0-85148506218