Parker Solar Probe Enters the Magnetically Dominated Solar Corona

J C Kasper; K G Klein; E Lichko; Jia Huang; C H K Chen; S T Badman; J Bonnell; P L Whittlesey; R Livi; D Larson; M Pulupa; A Rahmati; D Stansby; K E Korreck; M Stevens; A W Case; S D Bale; M Maksimovic; M Moncuquet; K Goetz; J S Halekas; D Malaspina; Nour E Raouafi; A Szabo; R MacDowall; Marco Velli; Thierry Dudok de Wit; G P Zank

doi:10.1103/PhysRevLett.127.255101

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Parker Solar Probe Enters the Magnetically Dominated Solar Corona

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Parker Solar Probe Enters the Magnetically Dominated Solar Corona

J C Kasper, K G Klein, E Lichko, Jia Huang, C H K Chen, S T Badman, J Bonnell, P L Whittlesey, R Livi, D Larson, …

Physical review letters, Vol.127(25), pp.255101-255101

12/17/2021

DOI: 10.1103/PhysRevLett.127.255101

PMID: 35029449

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Abstract

The high temperatures and strong magnetic fields of the solar corona form streams of solar wind that expand through the Solar System into interstellar space. At 09:33 UT on 28 April 2021 Parker Solar Probe entered the magnetized atmosphere of the Sun 13 million km above the photosphere, crossing below the Alfvén critical surface for five hours into plasma in casual contact with the Sun with an Alfvén Mach number of 0.79 and magnetic pressure dominating both ion and electron pressure. The spectrum of turbulence below the Alfvén critical surface is reported. Magnetic mapping suggests the region was a steady flow emerging on rapidly expanding coronal magnetic field lines lying above a pseudostreamer. The sub-Alfvénic nature of the flow may be due to suppressed magnetic reconnection at the base of the pseudostreamer, as evidenced by unusually low densities in this region and the magnetic mapping.

Details

Title: Subtitle: Parker Solar Probe Enters the Magnetically Dominated Solar Corona
Creators: J C Kasper - University of Michigan
K G Klein - University of Arizona
E Lichko - University of Arizona
Jia Huang - University of Michigan
C H K Chen - Queen Mary University of London
S T Badman - University of California, Berkeley
J Bonnell - University of California, Berkeley
P L Whittlesey - University of California, Berkeley
R Livi - University of California, Berkeley
D Larson - University of California, Berkeley
M Pulupa - University of California, Berkeley
A Rahmati - University of California, Berkeley
D Stansby - Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Surrey RH5 6NT, United Kingdom
K E Korreck - Smithsonian Astrophysical Observatory
M Stevens - Smithsonian Astrophysical Observatory
A W Case - Smithsonian Astrophysical Observatory
S D Bale - University of California, Berkeley
M Maksimovic - Université Paris Sciences et Lettres
M Moncuquet - Université Paris Sciences et Lettres
K Goetz - University of Minnesota
J S Halekas - University of Iowa
D Malaspina - University of Colorado Boulder
Nour E Raouafi - The Johns Hopkins Applied Physics Laboratory, Laurel, Maryland 20723, USA
A Szabo - Goddard Space Flight Center
R MacDowall - Goddard Space Flight Center
Marco Velli - Earth Planetary and Space Sciences, UCLA, California 90095, USA
Thierry Dudok de Wit - Université d'Orléans
G P Zank - University of Alabama in Huntsville
Resource Type: Journal article
Publication Details: Physical review letters, Vol.127(25), pp.255101-255101
DOI: 10.1103/PhysRevLett.127.255101
PMID: 35029449
NLM abbreviation: Phys Rev Lett
ISSN: 0031-9007
eISSN: 1079-7114
Grant note: DOI: 10.13039/100000104, name: National Aeronautics and Space Administration, award: NNN06AA01C; DOI: 10.13039/501100000271, name: Science and Technology Facilities Council, award: ST/N003748/2, ST/T00018X/1, ST/S000240/1
Language: English
Date published: 12/17/2021
Academic Unit: Physics and Astronomy
Record Identifier: 9984428676102771

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