Journal article
Energy Budget in the Solar Corona
The Astrophysical journal, Vol.954(2), p.108
09/01/2023
DOI: 10.3847/1538-4357/aceb64
Abstract
This paper addresses the first direct investigation of the energy budget in the solar corona. Exploiting joint observations of the same coronal plasma by Parker Solar Probe and the Metis coronagraph aboard Solar Orbiter and the conserved equations for mass, magnetic flux, and wave action, we estimate the values of all terms comprising the total energy flux of the proton component of the slow solar wind from 6.3 to 13.3 R⊙. For distances from the Sun to less than 7 R⊙, we find that the primary source of solar wind energy is magnetic fluctuations including Alfvén waves. As the plasma flows away from the low corona, magnetic energy is gradually converted into kinetic energy, which dominates the total energy flux at heights above 7 R⊙. It is found too that the electric potential energy flux plays an important role in accelerating the solar wind only at altitudes below 6 R⊙, while enthalpy and heat fluxes only become important at even lower heights. The results finally show that energy equipartition does not exist in the solar corona.
Details
- Title: Subtitle
- Energy Budget in the Solar Corona
- Creators
- Daniele Telloni - Osservatorio Astrofisico di TorinoMarco Romoli - Arcetri Astrophysical ObservatoryMarco Velli - Planetary Science InstituteGary P. Zank - University of Alabama in HuntsvilleLaxman Adhikari - University of Alabama in HuntsvilleLingling Zhao - University of Alabama in HuntsvilleCooper Downs - Predictive Science (United States)Jasper S. Halekas - University of IowaJaye L. Verniero - Goddard Space Flight CenterMichael D. McManus - University of California, BerkeleyChen Shi - Planetary Science InstituteAleksandr Burtovoi - Arcetri Astrophysical ObservatoryRoberto Susino - Osservatorio Astrofisico di TorinoDaniele Spadaro - Osservatorio Astrofisico di CataniaAlessandro Liberatore - Jet Propulsion LaboratoryEster Antonucci - Osservatorio Astrofisico di TorinoYara De Leo - Max Planck Institute for Solar System ResearchLucia Abbo - Osservatorio Astrofisico di TorinoFederica Frassati - Osservatorio Astrofisico di TorinoGiovanna Jerse - Trieste Astronomical ObservatoryFederico Landini - Osservatorio Astrofisico di TorinoGianalfredo Nicolini - Osservatorio Astrofisico di TorinoMaurizio Pancrazzi - Osservatorio Astrofisico di TorinoGiuliana Russano - Astronomical Observatory of CapodimonteClementina Sasso - Astronomical Observatory of CapodimonteVincenzo Andretta - Astronomical Observatory of CapodimonteVania Da Deppo - Center for Biomolecular NanotechnologiesSilvano Fineschi - Osservatorio Astrofisico di TorinoCatia Grimani - Istituto Nazionale di Fisica NuclearePetr Heinzel - University of WrocławJohn D. Moses - National Aeronautics and Space AdministrationGiampiero Naletto - University of PaduaMarco Stangalini - Agenzia Spaziale ItalianaLuca Teriaca - Max Planck Institute for Solar System ResearchMichela Uslenghi - Istituto di Astrofisica Spaziale e Fisica Cosmica di MilanoStuart D. Bale - University of California, BerkeleyJustin C. Kasper - University of Michigan
- Resource Type
- Journal article
- Publication Details
- The Astrophysical journal, Vol.954(2), p.108
- DOI
- 10.3847/1538-4357/aceb64
- ISSN
- 0004-637X
- eISSN
- 1538-4357
- Publisher
- The American Astronomical Society
- Number of pages
- 7
- Grant note
- 2018-30-HH.0 / Agenzia Spaziale Italiana (ASI) (https://doi.org/10.13039/501100003981)
- Language
- English
- Date published
- 09/01/2023
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984459655202771
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