Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 893, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/ab7eba
Keywords
Magnetic fields; Alfven waves; Space plasmas
Categories
Funding
- Los Alamos National Laboratory (LANL) through its Center for Space and Earth Science (CSES)
- LANL's Laboratory Directed Research and Development (LDRD) program [20180475DR]
- NSF [NSF PHY-1707272]
- NASA [NASA 80NSSC18K0646, NNX15AR16G]
- DOE [DE-SC0018266]
- National Science Foundation [OCI-0725070, ACI-1238993]
- state of Illinois
- National Science Foundation through PRAC [1614664]
- Office of Advanced Cyberinfrastructure (OAC)
- Direct For Computer & Info Scie & Enginr [1614664] Funding Source: National Science Foundation
- NASA [800736, NNX15AR16G] Funding Source: Federal RePORTER
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We study numerically small-scale reconnection events in kinetic, low-frequency, quasi-2D turbulence (termed kinetic-Alfven turbulence). Using 2D particle-in-cell simulations, we demonstrate that such turbulence generates reconnection structures where the electron dynamics do not couple to the ions, similarly to the electron-only reconnection events recently detected in the Earth's magnetosheath by Phan et al. Electron-only reconnection is thus an inherent property of kinetic-Alfven turbulence, where the electron current sheets have limited anisotropy and, as a result, their sizes are smaller than the ion inertial scale. The reconnection rate of such electron-only events is found to be close to 0.1.
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