Testing the Flux Rope Paradigm for Coronal Mass Ejections Using a Three-spacecraft Encounter Event
We present a 3D morphological and field reconstruction of a coronal mass ejection (CME) from 2023 November 28, which hits three spacecraft near 1 au: Wind at Earth’s L1 Lagrange point, STEREO-A with a longitudinal separation of 6 $\mathop{.}\limits^{\unicode{x000b0}}$ 5 west of Earth, and Solar Orbi...
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IOP Publishing
2025-01-01
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| Online Access: | https://doi.org/10.3847/1538-4357/adad5c |
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| author | Brian E. Wood Phillip Hess |
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| description | We present a 3D morphological and field reconstruction of a coronal mass ejection (CME) from 2023 November 28, which hits three spacecraft near 1 au: Wind at Earth’s L1 Lagrange point, STEREO-A with a longitudinal separation of 6 $\mathop{.}\limits^{\unicode{x000b0}}$ 5 west of Earth, and Solar Orbiter (SolO) at 10 $\mathop{.}\limits^{\unicode{x000b0}}$ 7 east of Earth. The reconstruction assumes a magnetic flux rope (MFR) structure for the CME. With this event, we test whether field tracings observed by a spacecraft passing near the central axis of a CME MFR (STEREO-A) can be used to successfully predict the field behavior seen by a spacecraft 17 ^∘ away (SolO), which has a more grazing encounter with the CME. We find that the MFR model does have significant success in simultaneously reproducing the field signs and rotations seen at STEREO-A, Wind, and SolO. This provides support for the MFR paradigm for CME structure. However, the SolO measurements, which are farthest from the central axis of the MFR, show less defined MFR signatures, presumably due to a greater degree of erosion and degradation of the MFR structure far from its central axis. |
| format | Article |
| id | doaj-art-f421388cc879489398eba72883429456 |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
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| series | The Astrophysical Journal |
| spelling | doaj-art-f421388cc879489398eba728834294562025-02-07T08:23:19ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01980111310.3847/1538-4357/adad5cTesting the Flux Rope Paradigm for Coronal Mass Ejections Using a Three-spacecraft Encounter EventBrian E. Wood0https://orcid.org/0000-0002-4998-0893Phillip Hess1Naval Research Laboratory , Space Science Division, Washington, DC 20375, USA ; [email protected] Research Laboratory , Space Science Division, Washington, DC 20375, USA ; [email protected] present a 3D morphological and field reconstruction of a coronal mass ejection (CME) from 2023 November 28, which hits three spacecraft near 1 au: Wind at Earth’s L1 Lagrange point, STEREO-A with a longitudinal separation of 6 $\mathop{.}\limits^{\unicode{x000b0}}$ 5 west of Earth, and Solar Orbiter (SolO) at 10 $\mathop{.}\limits^{\unicode{x000b0}}$ 7 east of Earth. The reconstruction assumes a magnetic flux rope (MFR) structure for the CME. With this event, we test whether field tracings observed by a spacecraft passing near the central axis of a CME MFR (STEREO-A) can be used to successfully predict the field behavior seen by a spacecraft 17 ^∘ away (SolO), which has a more grazing encounter with the CME. We find that the MFR model does have significant success in simultaneously reproducing the field signs and rotations seen at STEREO-A, Wind, and SolO. This provides support for the MFR paradigm for CME structure. However, the SolO measurements, which are farthest from the central axis of the MFR, show less defined MFR signatures, presumably due to a greater degree of erosion and degradation of the MFR structure far from its central axis.https://doi.org/10.3847/1538-4357/adad5cSolar coronal mass ejectionsSpace plasmasInterplanetary magnetic fieldsInterplanetary physics |
| spellingShingle | Brian E. Wood Phillip Hess Testing the Flux Rope Paradigm for Coronal Mass Ejections Using a Three-spacecraft Encounter Event The Astrophysical Journal Solar coronal mass ejections Space plasmas Interplanetary magnetic fields Interplanetary physics |
| title | Testing the Flux Rope Paradigm for Coronal Mass Ejections Using a Three-spacecraft Encounter Event |
| title_full | Testing the Flux Rope Paradigm for Coronal Mass Ejections Using a Three-spacecraft Encounter Event |
| title_fullStr | Testing the Flux Rope Paradigm for Coronal Mass Ejections Using a Three-spacecraft Encounter Event |
| title_full_unstemmed | Testing the Flux Rope Paradigm for Coronal Mass Ejections Using a Three-spacecraft Encounter Event |
| title_short | Testing the Flux Rope Paradigm for Coronal Mass Ejections Using a Three-spacecraft Encounter Event |
| title_sort | testing the flux rope paradigm for coronal mass ejections using a three spacecraft encounter event |
| topic | Solar coronal mass ejections Space plasmas Interplanetary magnetic fields Interplanetary physics |
| url | https://doi.org/10.3847/1538-4357/adad5c |
| work_keys_str_mv | AT brianewood testingthefluxropeparadigmforcoronalmassejectionsusingathreespacecraftencounterevent AT philliphess testingthefluxropeparadigmforcoronalmassejectionsusingathreespacecraftencounterevent |