Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno Era
Abstract In this study, observations from the Jovian auroral distributions experiment, Jupiter energetic particle detector instrument, and Magnetic field investigation instruments on Juno are used to identify signatures of magnetic reconnection at Jupiter's dawn magnetopause and relate these si...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-07-01
|
| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2022GL099141 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849712464007004160 |
|---|---|
| author | J. Montgomery R. W. Ebert G. Clark S. A. Fuselier F. Allegrini F. Bagenal S. J. Bolton G. A. DiBraccio R. J. Wilson |
| author_facet | J. Montgomery R. W. Ebert G. Clark S. A. Fuselier F. Allegrini F. Bagenal S. J. Bolton G. A. DiBraccio R. J. Wilson |
| author_sort | J. Montgomery |
| collection | DOAJ |
| description | Abstract In this study, observations from the Jovian auroral distributions experiment, Jupiter energetic particle detector instrument, and Magnetic field investigation instruments on Juno are used to identify signatures of magnetic reconnection at Jupiter's dawn magnetopause and relate these signatures to the local plasma environment. Magnetopause crossings occurred between 73–114 Jovian radii and 4.3–6.2 magnetic local time at low latitudes. Reconnection signatures include plasma energization and ion velocity enhancements resembling reconnection jets. We test for diamagnetic suppression which considers the magnetic shear and plasma beta (β) before and after a magnetopause crossing. Findings show that a large majority of these dawn magnetopause crossings at Jupiter have a low likelihood for local magnetic reconnection (are diamagnetically suppressed) because of high delta β values and/or low magnetic shear angles across the magnetopause boundary. These crossings exhibit no evidence of local reconnection while crossings that are not diamagnetically suppressed show multiple signatures of reconnection, adhering to the Swisdak relation. |
| format | Article |
| id | doaj-art-8c1de08197174bccabbf0e35ecde3b59 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2022-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-8c1de08197174bccabbf0e35ecde3b592025-08-20T03:14:16ZengWileyGeophysical Research Letters0094-82761944-80072022-07-014914n/an/a10.1029/2022GL099141Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno EraJ. Montgomery0R. W. Ebert1G. Clark2S. A. Fuselier3F. Allegrini4F. Bagenal5S. J. Bolton6G. A. DiBraccio7R. J. Wilson8Department of Physics and Astronomy University of Texas at San Antonio San Antonio TX USADepartment of Physics and Astronomy University of Texas at San Antonio San Antonio TX USAJohns Hopkins University Applied Physics Lab Laurel MD USADepartment of Physics and Astronomy University of Texas at San Antonio San Antonio TX USADepartment of Physics and Astronomy University of Texas at San Antonio San Antonio TX USALaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USASouthwest Research Institute San Antonio TX USANASA Goddard Space Flight Center Greenbelt MD USALaboratory for Atmospheric and Space Physics University of Colorado Boulder Boulder CO USAAbstract In this study, observations from the Jovian auroral distributions experiment, Jupiter energetic particle detector instrument, and Magnetic field investigation instruments on Juno are used to identify signatures of magnetic reconnection at Jupiter's dawn magnetopause and relate these signatures to the local plasma environment. Magnetopause crossings occurred between 73–114 Jovian radii and 4.3–6.2 magnetic local time at low latitudes. Reconnection signatures include plasma energization and ion velocity enhancements resembling reconnection jets. We test for diamagnetic suppression which considers the magnetic shear and plasma beta (β) before and after a magnetopause crossing. Findings show that a large majority of these dawn magnetopause crossings at Jupiter have a low likelihood for local magnetic reconnection (are diamagnetically suppressed) because of high delta β values and/or low magnetic shear angles across the magnetopause boundary. These crossings exhibit no evidence of local reconnection while crossings that are not diamagnetically suppressed show multiple signatures of reconnection, adhering to the Swisdak relation.https://doi.org/10.1029/2022GL099141solar windmagnetosphereJupiterJunomagnetic reconnectionplasma |
| spellingShingle | J. Montgomery R. W. Ebert G. Clark S. A. Fuselier F. Allegrini F. Bagenal S. J. Bolton G. A. DiBraccio R. J. Wilson Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno Era Geophysical Research Letters solar wind magnetosphere Jupiter Juno magnetic reconnection plasma |
| title | Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno Era |
| title_full | Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno Era |
| title_fullStr | Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno Era |
| title_full_unstemmed | Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno Era |
| title_short | Investigating the Occurrence of Magnetic Reconnection at Jupiter's Dawn Magnetopause During the Juno Era |
| title_sort | investigating the occurrence of magnetic reconnection at jupiter s dawn magnetopause during the juno era |
| topic | solar wind magnetosphere Jupiter Juno magnetic reconnection plasma |
| url | https://doi.org/10.1029/2022GL099141 |
| work_keys_str_mv | AT jmontgomery investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera AT rwebert investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera AT gclark investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera AT safuselier investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera AT fallegrini investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera AT fbagenal investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera AT sjbolton investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera AT gadibraccio investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera AT rjwilson investigatingtheoccurrenceofmagneticreconnectionatjupitersdawnmagnetopauseduringthejunoera |