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Observations of Magnetic Reconnection in the Transition Region of Quasi-Parallel Shocks

Abstract : Using observations of Earth's bow shock by the Magnetospheric Multiscale mission, we show for the first time that active magnetic reconnection is occurring at current sheets embedded within the quasi-parallel shock's transition layer. We observe an electron jet and heating but no ion response, suggesting we have observed an electron-only mode. The lack of ion response is consistent with simulations showing reconnection onset on sub-ion time scales. We also discuss the impact of electron heating in shocks via reconnection.
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Submitted on : Friday, May 20, 2022 - 4:03:02 PM
Last modification on : Monday, July 4, 2022 - 8:43:18 AM

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I. Gingell, S. J. Schwartz, J. P. Eastwood, J. L. Burch, R. E. Ergun, et al.. Observations of Magnetic Reconnection in the Transition Region of Quasi-Parallel Shocks. Geophysical Research Letters, 2019, 46, pp.1177-1184. ⟨10.1029/2018GL081804⟩. ⟨insu-03674460⟩

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