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8 results on '"Pritchard, K. R."'

2. Reconnection X‐Line Orientations at the Earth's Magnetopause

Author

Fuselier, S. A., primary, Webster, J. M., additional, Trattner, K. J., additional, Petrinec, S. M., additional, Genestreti, K. J., additional, Pritchard, K. R., additional, LLera, K., additional, Broll, J. M., additional, Burch, J. L., additional, and Strangeway, R. J., additional

Published
2021
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3. Electron Inflow Velocities and Reconnection Rates at Earth's Magnetopause and Magnetosheath

Author

Burch, J. L., primary, Webster, J. M., additional, Hesse, M., additional, Genestreti, K. J., additional, Denton, R. E., additional, Phan, T. D., additional, Hasegawa, H., additional, Cassak, P. A., additional, Torbert, R. B., additional, Giles, B. L., additional, Gershman, D. J., additional, Ergun, R. E., additional, Russell, C. T., additional, Strangeway, R. J., additional, Le Contel, O., additional, Pritchard, K. R., additional, Marshall, A. T., additional, Hwang, K.‐J., additional, Dokgo, K., additional, Fuselier, S. A., additional, Chen, L.‐J., additional, Wang, S., additional, Swisdak, M., additional, Drake, J. F., additional, Argall, M. R., additional, Trattner, K. J., additional, Yamada, M., additional, and Paschmann, G., additional

Published
2020
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5. The Role of EN in the Reconnection Diffusion Region

Author

Pritchard, K. R., Burch, J. L., Fuselier, S. A., Webster, J. M., Genestreti, K. J., Broll, J. M., Phan, T., Giles, B. L., Torbert, R. B., Russell, C. T., Strangeway, R. J., Mukherjee, J., Rager, A. C., Argall, M. R., Le Contel, Olivier, Laboratoire de Physique des Plasmas (LPP), Université Paris-Saclay-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École polytechnique (X)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)

Subjects
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Physics::Space Physics, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience; We use high-resolution data from the Fast Plasma Instrument (FPI) on board the Magnetosphere Multiscale Mission (MMS) to study a unique dayside asymmetric reconnection event that occurred on 29 December 2016. During this event all four spacecraft observed the electron diffusion region (EDR). Evidence from this event show that electron crescents were produced as EN accelerated magnetosheath electrons near the X-point across the magnetopause where they executed meandering orbits along the reconnection current sheet. This paper provides the first direct measurement of EN acceleration.

Published
2018

7. Energy Conversion and Electron Acceleration in the Magnetopause Reconnection Diffusion Region

Author

Pritchard, K. R., primary, Burch, J. L., additional, Fuselier, S. A., additional, Webster, J. M., additional, Torbert, R. B., additional, Argall, M. R., additional, Broll, J., additional, Genestreti, K. J., additional, Giles, B. L., additional, Le Contel, O., additional, Mukherjee, J., additional, Phan, T. D., additional, Rager, A. C., additional, Russell, C. T., additional, and Strangeway, R. J., additional

Published
2019
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8. Small-Scale Dayside Magnetic Reconnection Analysis via MMS

Author

Pritchard, K. R., Burch, J. L., Fuselier, S. A., Webster, J., Genestreti, K., Torbert, R. B., Rager, A. C., Phan, T., Argall, M. R., Le Contel, Olivier, Russell, C. T., Strangeway, R. J., Giles, B. L., Laboratoire de Physique des Plasmas (LPP), Université Paris-Saclay-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École polytechnique (X)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)

Subjects
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Physics::Space Physics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience; The Magnetospheric Multiscale (MMS) mission has the primary objective of understanding the physics of the reconnection electron diffusion region (EDR), where magnetic energy is transformed into particle energy. In this poster, we present data from an EDR encounter that occurred in late December 2016 at approximately 11:00 MLT with a moderate guide field. The spacecraft were in a tetrahedral formation with an average inter-spacecraft distance of approximately 7 kilometers. During this event electron crescent-shaped distributions were observed in the electron stagnation region as is typical for asymmetric reconnection. Based on the observed ion velocity jets, the spacecraft traveled just south of the EDR. Because of the close spacecraft separation, fairly accurate computation of the Hall, electron pressure divergence, and electron inertia components of the reconnection electric field could be made. In the region of the crescent distributions good agreement was observed, with the strongest component being the normal electric field and the most significant sources being electron pressure divergence and the Hall electric field. While the strongest currents were in the out-of-plane direction, the dissipation was strongest in the normal direction because of the larger magnitude of the normal electric field component. These results are discussed in light of recent 3D PIC simulations performed by other groups.

Published
2017

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