UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Picoflare jets power the solar wind emerging from a coronal hole on the Sun.

Chitta, LP; Zhukov, AN; Berghmans, D; Peter, H; Parenti, S; Mandal, S; Aznar Cuadrado, R; ... Seaton, DB; + view all (2023) Picoflare jets power the solar wind emerging from a coronal hole on the Sun. Science , 381 (6660) pp. 867-872. 10.1126/science.ade5801. Green open access

[thumbnail of 2308.13044.pdf]
Preview
Text
2308.13044.pdf - Accepted Version

Download (5MB) | Preview

Abstract

Coronal holes are areas on the Sun with open magnetic field lines. They are a source region of the solar wind, but how the wind emerges from coronal holes is not known. We observed a coronal hole using the Extreme Ultraviolet Imager on the Solar Orbiter spacecraft. We identified jets on scales of a few hundred kilometers, which last 20 to 100 seconds and reach speeds of ~100 kilometers per second. The jets are powered by magnetic reconnection and have kinetic energy in the picoflare range. They are intermittent but widespread within the observed coronal hole. We suggest that such picoflare jets could produce enough high-temperature plasma to sustain the solar wind and that the wind emerges from coronal holes as a highly intermittent outflow at small scales.

Type: Article
Title: Picoflare jets power the solar wind emerging from a coronal hole on the Sun.
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1126/science.ade5801
Publisher version: https://doi.org/10.1126/science.ade5801
Language: English
Additional information: Copyright © 2023 the authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. - This version is the author accepted manuscript. - This research was funded in whole or in part by the European Union through Horizon Europe (grant no. 101039844), a cOAlition S organization. The author will make the Author Accepted Manuscript (AAM) version available under a CC BY public copyright license.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10176244
Downloads since deposit
8Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item