Alfvén surface
id:
alfv-n-surface-188-8200161
title:
Alfvén surface
text:
The Alfvén surface is the boundary separating a star's corona from the stellar wind defined as where the coronal plasma's Alfvén speed and the large-scale stellar wind speed are equal. It is named after Hannes Alfvén, and is also called Alfvén critical surface, Alfvén point, or Alfvén radius. In 2018, the Parker Solar Probe became the first spacecraft that crossed Alfvén surface of the Sun.
brand slug:
wiki
category slug:
encyclopedia
description:
Boundary between solar corona and wind
original url:
https://en.wikipedia.org/wiki/Alfv%C3%A9n_surface
date created:
2022-07-30T14:46:04Z
date modified:
2024-09-08T20:13:29Z
main entity:
{"identifier":"Q113518728","url":"https://www.wikidata.org/entity/Q113518728"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/e/e2/Parker_Solar_Probe_touches_the_Sun.webm","width":1920,"height":1080}
fields total:
13
integrity:
16