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University of New Hampshire

Coronal Mass Ejection Research Group

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2020

Magnetic clouds

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On The Radial And Longitudinal Variation Of A Magnetic Cloud: Ace, Wind, Artemis And Juno Observations, Solar Physics, Emma E. Davies, Robert J. Forsyth, Simon W. Good, Emilia K. J. Kilpua Nov 2020

On The Radial And Longitudinal Variation Of A Magnetic Cloud: Ace, Wind, Artemis And Juno Observations, Solar Physics, Emma E. Davies, Robert J. Forsyth, Simon W. Good, Emilia K. J. Kilpua

Coronal Mass Ejection Research Group

We present observations of the same magnetic cloud made near Earth by the Advance Composition Explorer (ACE), Wind, and the Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon’s Interaction with the Sun (ARTEMIS) mission comprising the Time History of Events and Macroscale Interactions during Substorms (THEMIS) B and THEMIS C spacecraft, and later by Juno at a distance of 1.2 AU. The spacecraft were close to radial alignment throughout the event, with a longitudinal separation of 3.6∘ between Juno and the spacecraft near Earth. The magnetic cloud likely originated from a filament eruption on 22 October 2011 at 00:05 UT, …