Double Layers in the Martian Magnetosheath
The observation of electrostatic double layers in Martian magnetosheath plasma is reported, based on medium-frequency (100 Hz–32 kHz) electric field data recorded by the Langmuir Probe and Waves on board the Mars Atmosphere and Volatile Evolution spacecraft on 2021 January 1. A total of six burst mo...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/adad6f |
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| author | Sahil Pandey Amar Kakad Bharati Kakad Kuldeep Singh Ioannis Kourakis |
| author_facet | Sahil Pandey Amar Kakad Bharati Kakad Kuldeep Singh Ioannis Kourakis |
| author_sort | Sahil Pandey |
| collection | DOAJ |
| description | The observation of electrostatic double layers in Martian magnetosheath plasma is reported, based on medium-frequency (100 Hz–32 kHz) electric field data recorded by the Langmuir Probe and Waves on board the Mars Atmosphere and Volatile Evolution spacecraft on 2021 January 1. A total of six burst mode events were scrutinized, revealing the occurrence of double layer structures. Overall, 79 double layers were identified, with their absolute amplitudes and widths found to be in the ranges of 0.4–3.3 mV m ^−1 and 0.6–6.4 ms, respectively. The dominant frequency associated with the observed excitations lies well above the ion plasma frequency ( f _pi ). The identified structures were observed at 2600–4400 km altitude in the dusk sector (17–19 LT). Extensive analysis based on a nonlinear multifluid plasma model shows that the observed structures are electron-acoustic double layers. A comparison of theory and observations indicates that these double layers have spatial scales in the range of 0.4–10 km. This is the first detailed study to give conclusive evidence of the occurrence of double layers in the Martian plasma environment. |
| format | Article |
| id | doaj-art-84e70f3c90174feb82e8bd5e5aadec4f |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-84e70f3c90174feb82e8bd5e5aadec4f2025-08-20T02:45:38ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198114410.3847/1538-4357/adad6fDouble Layers in the Martian MagnetosheathSahil Pandey0https://orcid.org/0009-0009-1647-2786Amar Kakad1https://orcid.org/0000-0002-1308-4245Bharati Kakad2https://orcid.org/0000-0001-8440-3373Kuldeep Singh3https://orcid.org/0000-0003-3526-8085Ioannis Kourakis4https://orcid.org/0000-0002-4027-0166Indian Institute of Geomagnetism , New Panvel, Navi Mumbai 410218, IndiaIndian Institute of Geomagnetism , New Panvel, Navi Mumbai 410218, IndiaIndian Institute of Geomagnetism , New Panvel, Navi Mumbai 410218, IndiaDepartment of Mathematics, Khalifa University of Science and Technology , Abu Dhabi, United Arab EmiratesDepartment of Mathematics, Khalifa University of Science and Technology , Abu Dhabi, United Arab Emirates; Hellenic Space Center , Athens, GreeceThe observation of electrostatic double layers in Martian magnetosheath plasma is reported, based on medium-frequency (100 Hz–32 kHz) electric field data recorded by the Langmuir Probe and Waves on board the Mars Atmosphere and Volatile Evolution spacecraft on 2021 January 1. A total of six burst mode events were scrutinized, revealing the occurrence of double layer structures. Overall, 79 double layers were identified, with their absolute amplitudes and widths found to be in the ranges of 0.4–3.3 mV m ^−1 and 0.6–6.4 ms, respectively. The dominant frequency associated with the observed excitations lies well above the ion plasma frequency ( f _pi ). The identified structures were observed at 2600–4400 km altitude in the dusk sector (17–19 LT). Extensive analysis based on a nonlinear multifluid plasma model shows that the observed structures are electron-acoustic double layers. A comparison of theory and observations indicates that these double layers have spatial scales in the range of 0.4–10 km. This is the first detailed study to give conclusive evidence of the occurrence of double layers in the Martian plasma environment.https://doi.org/10.3847/1538-4357/adad6fPlanetary magnetospheresSpace plasmas |
| spellingShingle | Sahil Pandey Amar Kakad Bharati Kakad Kuldeep Singh Ioannis Kourakis Double Layers in the Martian Magnetosheath The Astrophysical Journal Planetary magnetospheres Space plasmas |
| title | Double Layers in the Martian Magnetosheath |
| title_full | Double Layers in the Martian Magnetosheath |
| title_fullStr | Double Layers in the Martian Magnetosheath |
| title_full_unstemmed | Double Layers in the Martian Magnetosheath |
| title_short | Double Layers in the Martian Magnetosheath |
| title_sort | double layers in the martian magnetosheath |
| topic | Planetary magnetospheres Space plasmas |
| url | https://doi.org/10.3847/1538-4357/adad6f |
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