Energy Conversion at Kinetic Scales in the Turbulent Magnetosheath
The process of conversion or dissipation of energy in nearly collisionless turbulent space plasma, is yet to be fully understood. The existing models offer different energy dissipation mechanisms which are based on wave particle interactions or non-resonant stochastic heating. There are other mechan...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2019-09-01
|
| Series: | Frontiers in Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/article/10.3389/fspas.2019.00060/full |
| _version_ | 1819236342258728960 |
|---|---|
| author | Zoltán Vörös Zoltán Vörös Emiliya Yordanova Yuri V. Khotyaintsev Ali Varsani Yasuhito Narita |
| author_facet | Zoltán Vörös Zoltán Vörös Emiliya Yordanova Yuri V. Khotyaintsev Ali Varsani Yasuhito Narita |
| author_sort | Zoltán Vörös |
| collection | DOAJ |
| description | The process of conversion or dissipation of energy in nearly collisionless turbulent space plasma, is yet to be fully understood. The existing models offer different energy dissipation mechanisms which are based on wave particle interactions or non-resonant stochastic heating. There are other mechanisms of irreversible processes in space. For example, turbulence generated coherent structures, e.g., current sheets are ubiquitous in the solar wind and quasi-parallel magnetosheath. Reconnecting current sheets in plasma turbulence are converting magnetic energy to kinetic and thermal energy. It is important to understand how the multiple (reconnecting) current sheets contribute to spatial distribution of turbulent dissipation. However, detailed studies of such complex structures have been possible mainly via event studies in proper coordinate systems, in which the local inflow/outflow, electric and magnetic field directions, and gradients could be studied. Here we statistically investigate different energy exchange/dissipation (EED) measures defined in local magnetic field-aligned coordinates, as well as frame-independent scalars. The presented statistical comparisons based on the unique high-resolution MMS data contribute to better understanding of the plasma heating problem in turbulent space plasmas. |
| first_indexed | 2024-12-23T13:02:55Z |
| format | Article |
| id | doaj.art-13f3654f937d467f9bfe22cdb9177b04 |
| institution | Directory Open Access Journal |
| issn | 2296-987X |
| language | English |
| last_indexed | 2024-12-23T13:02:55Z |
| publishDate | 2019-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Astronomy and Space Sciences |
| spelling | doaj.art-13f3654f937d467f9bfe22cdb9177b042022-12-21T17:45:59ZengFrontiers Media S.A.Frontiers in Astronomy and Space Sciences2296-987X2019-09-01610.3389/fspas.2019.00060482064Energy Conversion at Kinetic Scales in the Turbulent MagnetosheathZoltán Vörös0Zoltán Vörös1Emiliya Yordanova2Yuri V. Khotyaintsev3Ali Varsani4Yasuhito Narita5Space Research Institute, Austrian Academy of Sciences, Graz, AustriaGeodetic and Geophysical Institute, Hungarian Academy of Sciences, Sopron, HungarySwedish Institute of Space Physics, Uppsala, SwedenSwedish Institute of Space Physics, Uppsala, SwedenSpace Research Institute, Austrian Academy of Sciences, Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, Graz, AustriaThe process of conversion or dissipation of energy in nearly collisionless turbulent space plasma, is yet to be fully understood. The existing models offer different energy dissipation mechanisms which are based on wave particle interactions or non-resonant stochastic heating. There are other mechanisms of irreversible processes in space. For example, turbulence generated coherent structures, e.g., current sheets are ubiquitous in the solar wind and quasi-parallel magnetosheath. Reconnecting current sheets in plasma turbulence are converting magnetic energy to kinetic and thermal energy. It is important to understand how the multiple (reconnecting) current sheets contribute to spatial distribution of turbulent dissipation. However, detailed studies of such complex structures have been possible mainly via event studies in proper coordinate systems, in which the local inflow/outflow, electric and magnetic field directions, and gradients could be studied. Here we statistically investigate different energy exchange/dissipation (EED) measures defined in local magnetic field-aligned coordinates, as well as frame-independent scalars. The presented statistical comparisons based on the unique high-resolution MMS data contribute to better understanding of the plasma heating problem in turbulent space plasmas.https://www.frontiersin.org/article/10.3389/fspas.2019.00060/fullplasma turbulencecurrent sheetsmagnetic reconnectionterrestrial magnetosheathplasma heating |
| spellingShingle | Zoltán Vörös Zoltán Vörös Emiliya Yordanova Yuri V. Khotyaintsev Ali Varsani Yasuhito Narita Energy Conversion at Kinetic Scales in the Turbulent Magnetosheath Frontiers in Astronomy and Space Sciences plasma turbulence current sheets magnetic reconnection terrestrial magnetosheath plasma heating |
| title | Energy Conversion at Kinetic Scales in the Turbulent Magnetosheath |
| title_full | Energy Conversion at Kinetic Scales in the Turbulent Magnetosheath |
| title_fullStr | Energy Conversion at Kinetic Scales in the Turbulent Magnetosheath |
| title_full_unstemmed | Energy Conversion at Kinetic Scales in the Turbulent Magnetosheath |
| title_short | Energy Conversion at Kinetic Scales in the Turbulent Magnetosheath |
| title_sort | energy conversion at kinetic scales in the turbulent magnetosheath |
| topic | plasma turbulence current sheets magnetic reconnection terrestrial magnetosheath plasma heating |
| url | https://www.frontiersin.org/article/10.3389/fspas.2019.00060/full |
| work_keys_str_mv | AT zoltanvoros energyconversionatkineticscalesintheturbulentmagnetosheath AT zoltanvoros energyconversionatkineticscalesintheturbulentmagnetosheath AT emiliyayordanova energyconversionatkineticscalesintheturbulentmagnetosheath AT yurivkhotyaintsev energyconversionatkineticscalesintheturbulentmagnetosheath AT alivarsani energyconversionatkineticscalesintheturbulentmagnetosheath AT yasuhitonarita energyconversionatkineticscalesintheturbulentmagnetosheath |