Results 71 to 80 of about 930 (170)

Galileo PLS Plasma Observations During the E12 Europa Flyby Refuting an Encounter With a Cryovolcanic Plume

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract During Galileo's closest (“E12”) flyby of Europa, a brief burst of wave activity was recorded by the plasma wave instrumentation, PWS. This was speculatively interpreted by Jia et al. (2018, https://doi.org/10.1038/s41550‐018‐0450‐z) as a 2,100 cm−3 spike in plasma densities from a water plume encounter. While the plasma instrument, PLS, could
William. R. Paterson, Glyn. A. Collinson
wiley   +1 more source

Differences in Ultra‐Low‐Frequency Waves Associated With Dipolarization in the Near‐Earth Magnetotail Between Substorms and Pseudosubstorms

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract We studied the characteristics of ultra‐low‐frequency (ULF) waves associated with dipolarization in the near‐Earth plasma sheet for substorms and pseudosubstorms, employing superposed epoch analysis of data from the Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft.
Kanpatom Kasonsuwan, Yukinaga Miyashita, Suwicha Wannawichian   +2 more
wiley   +1 more source

Second-order perturbations in Alfvén waves in cold plasma approximation

Solar-Terrestrial Physics, 2019
The second-order amplitude perturbations driven by Alfvén waves are studied. Equations for such second-order perturbations are derived and their solutions are found. The second-order perturbations are shown to be generated by the magnetic pressure of the
Dmitrienko I.S.
doaj   +1 more source

Solar‐Wind Triggering of Substorm Onset During the May 2024 Superstorm: Coordinated Global Observations and Simulations

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Substorms are often described by a loading‐unloading cycle, where onset follows gradual accumulation of solar wind magnetic flux in the magnetosphere. Yet observations indicate that intense substorms can also be directly driven, though the underlying mechanism remains unresolved.
Yong Ren, Minghui Zhu, Lei Dai, Walter Gonzalez, Shan Wang, Chi Wang, C. Philippe Escoubet, Jiaojiao Zhang, Qiugang Zong   +8 more
wiley   +1 more source

Importance of the dusk-dawn interplanetary magnetic field component (IMF By) to magnetospheric convection in Earth’s magnetotail plasma sheet

Frontiers in Astronomy and Space Sciences
The solar wind and its embedded magnetic field, the interplanetary magnetic field (IMF) together with magnetic reconnection power the large-scale plasma and magnetic flux circulation in the Earth’s magnetosphere-ionosphere system.
Timo Pitkänen, Timo Pitkänen, Anita Kullen, Ghai Siung Chong   +3 more
doaj   +1 more source

Searching for Electron‐Only Magnetic Reconnection on Lunar Crustal Magnetic Fields: A Case Study of Kaguya Low‐Altitude Observations

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Due to the lack of low‐altitude (<∼ ${< } \sim $50 km), high‐time‐resolution measurements, expected electron‐only magnetic reconnection near lunar magnetic anomalies (LMAs) has not been directly observed by lunar orbiters even though it is expected from numerical simulations and laboratory experiments.
Kohei Ogino, Yuki Harada, Yoshifumi Saito, Shoichiro Yokota, Masaki N. Nishino, Futoshi Takahashi, Hisayoshi Shimizu, Yoshiya Kasahara, Atsushi Kumamoto   +8 more
wiley   +1 more source

Fast Tearing Mode Driven by Demagnetized Electrons

Geophysical Research Letters
Recent MMS observations have discovered electron‐scale super‐thin current sheets (STCSs) with a partial electron demagnetization, which distinguishes them from the ion‐scale TCSs traditionally observed by the Cluster mission. Our investigation focuses on
Olga O. Tsareva, Makar V. Leonenko, Elena E. Grigorenko, Helmi V. Malova, Victor Yu. Popov, Lev M. Zelenyi   +5 more
doaj   +1 more source

Centrifugal trapping in the magnetotail

Annales Geophysicae, 1995
Abstract. Particles leaving the neutral sheet in the distant magnetotail at times display adiabatic trajectory sequences characterized by an inflection toward the equator and subsequent mirroring in its vicinity. We demonstrate that this low-latitude mirroring results primarily from a centrifugal deceleration due to the fast direction-changing E×B ...
D. C. Delcourt, R. F. Martin, J. A. Sauvaud, T. E. Moore   +3 more
openaire   +4 more sources

Dialogue on the magnetotail

Eos, Transactions American Geophysical Union, 1985
During the International Magnetospheric Study (IMS), a vast data set was acquired which is presently being brought to bear on solving some of the outstanding questions regarding magnetospheric dynamics. The data involve plasma and field parameters measured on satellites both in the magnetosphere and in the interplanetary medium, as well as ground‐based
openaire   +1 more source

Duskward displacement of plasmoids and reconnection in the near-Earth magnetotail

Earth, Planets and Space
Magnetic reconnection in the near-Earth magnetotail is responsible for explosive release of energy during substorms and auroral breakups. This near-tail reconnection was previously assumed to occur around the midnight meridian, where earthward flows were
Akimasa Ieda, Yukinaga Miyashita
doaj   +1 more source