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

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

Research output: Contribution to journal › Article › peer-review

165 Scopus citations

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.

Original language	English (US)
Article number	A61
Journal	Physical review letters
Volume	127
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.127.255101
State	Published - Dec 17 2021

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.127.255101

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Kasper, J. C., Klein, K. G., Lichko, E., Huang, J., Chen, C. H. K., Badman, S. T., Bonnell, J., Whittlesey, P. L., Livi, R., Larson, D., Pulupa, M., Rahmati, A., Stansby, D., Korreck, K. E., Stevens, M., Case, A. W., Bale, S. D., Maksimovic, M., Moncuquet, M., ... Zank, G. P. (2021). Parker Solar Probe Enters the Magnetically Dominated Solar Corona. Physical review letters, 127(25), Article A61. https://doi.org/10.1103/PhysRevLett.127.255101

Kasper, JC, Klein, KG, Lichko, E, Huang, J, Chen, CHK, Badman, ST, Bonnell, J, Whittlesey, PL, Livi, R, Larson, D, Pulupa, M, Rahmati, A, Stansby, D, Korreck, KE, Stevens, M, Case, AW, Bale, SD, Maksimovic, M, Moncuquet, M, Goetz, K, Halekas, JS, Malaspina, D, Raouafi, NE, Szabo, A, Macdowall, R, Velli, M, Dudok De Wit, T & Zank, GP 2021, 'Parker Solar Probe Enters the Magnetically Dominated Solar Corona', Physical review letters, vol. 127, no. 25, A61. https://doi.org/10.1103/PhysRevLett.127.255101

@article{b986895dd2ae47cd99f82b59140e6339,

title = "Parker Solar Probe Enters the Magnetically Dominated Solar Corona",

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 Alfv{\'e}n critical surface for five hours into plasma in casual contact with the Sun with an Alfv{\'e}n Mach number of 0.79 and magnetic pressure dominating both ion and electron pressure. The spectrum of turbulence below the Alfv{\'e}n 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-Alfv{\'e}nic 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.",

author = "Kasper, \{J. C.\} and Klein, \{K. G.\} and E. Lichko and Jia Huang and Chen, \{C. H.K.\} and Badman, \{S. T.\} and J. Bonnell and Whittlesey, \{P. L.\} and R. Livi and D. Larson and M. Pulupa and A. Rahmati and D. Stansby and Korreck, \{K. E.\} and M. Stevens and Case, \{A. W.\} and Bale, \{S. D.\} and M. Maksimovic and M. Moncuquet and K. Goetz and Halekas, \{J. S.\} and D. Malaspina and Raouafi, \{Nour E.\} and A. Szabo and R. Macdowall and Marco Velli and \{Dudok De Wit\}, Thierry and Zank, \{G. P.\}",

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month = dec,

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doi = "10.1103/PhysRevLett.127.255101",

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AU - Kasper, J. C.

AU - Klein, K. G.

AU - Lichko, E.

AU - Huang, Jia

AU - Chen, C. H.K.

AU - Badman, S. T.

AU - Bonnell, J.

AU - Whittlesey, P. L.

AU - Livi, R.

AU - Larson, D.

AU - Pulupa, M.

AU - Rahmati, A.

AU - Stansby, D.

AU - Korreck, K. E.

AU - Stevens, M.

AU - Case, A. W.

AU - Bale, S. D.

AU - Maksimovic, M.

AU - Moncuquet, M.

AU - Goetz, K.

AU - Halekas, J. S.

AU - Malaspina, D.

AU - Raouafi, Nour E.

AU - Szabo, A.

AU - Macdowall, R.

AU - Velli, Marco

AU - Dudok De Wit, Thierry

AU - Zank, G. P.

N1 - Publisher Copyright: © 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

PY - 2021/12/17

Y1 - 2021/12/17

N2 - 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.

AB - 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.

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VL - 127

JO - Physical review letters

JF - Physical review letters

IS - 25

M1 - A61

ER -

Parker Solar Probe Enters the Magnetically Dominated Solar Corona

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