Results 121 to 130 of about 13,652 (241)

Magnetotail Source of Premidnight Upward Field‐Aligned Currents: Nature of the Substorm Current System

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract The substorm current wedge constitutes the backbone of the substorm current system. Its field‐aligned current components include an upward current in the premidnight sector and a downward current in the midnight‐morning sector, which connect the auroral ionosphere to the magnetotail.
Tsugunobu Nagai, Iku Shinohara
wiley   +1 more source

Flux-rope-mediated Turbulent Magnetic Reconnection

The Astrophysical Journal
We present a new model of magnetic reconnection in the presence of turbulence. The new model differs from the Lazarian–Vishniac turbulent reconnection theory by emphasizing the role of locally coherent magnetic structures, whose existence is shown to be ...
Alexander J. B. Russell
doaj   +1 more source

Reinvestigating the Nightside Ionosphere of Mars With 8 Years of Mars Express and MAVEN Data

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Tailward ion escape in the nightside magnetotail is one of the dominant paths of ion escape from Mars. The Martian nightside ionosphere can serve as a major reservoir for this escape channel, but its global distributions and dependence on the upstream solar wind have not been fully investigated due to observational limitations.
N. Takeuchi, Y. Harada, B. Sánchez‐Cano   +2 more
wiley   +1 more source

Numerical Simulation of Oscillatory Magnetic Reconnection Modulated by Solar Convective Motions

The Astrophysical Journal
Oscillatory magnetic reconnection is a periodic magnetic reconnection process, during which the current sheet’s orientation and the magnetic connections change periodically.
Yifu Wang, Lei Ni, Guanchong Cheng, Jialiang Hu, Yuhao Chen, Abdullah Zafar   +5 more
doaj   +1 more source

Comparative Dynamics of Substorms and Sawtooth Events

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract We present a comprehensive comparative analysis of magnetospheric substorms and sawtooth events using multi‐point observations from ground‐based magnetometers, geostationary satellites, and the Time History of Events and Macroscale Interactions during Substorms mission.
C. C. DiMarco, T. I. Pulkkinen, R. L. McPherron, M. G. Henderson, J. W. Gjerloev   +4 more
wiley   +1 more source

Magnetic reconnection solutions in the presence of multiple nulls

, 1999
It is known that exact analytic solutions can be constructed for incompressible magnetic reconnection in three space dimensions. In the case of an isolated X-point null, there are two types of reconnection solutions, namely, “spine” and “fan” models ...
Heerikhuisen, J., Heerikhuisen, Jacob, Fabling, R.B., Watson, P.G., Craig, Ian J.D.   +4 more
core   +1 more source

COVEN: Providing a Variety of Threshold‐Based Forecasts for the Outer Radiation Belt

Space Weather, Volume 24, Issue 6, June 2026.
Abstract We present a suite of VAMPIRE (Van Allen belt Multi‐day Predictions by Implementing a Random Forest for Electrons) models capable of predicting if the outer radiation belt crosses set percentile thresholds. We use Random Forest classification models to predict if the daily ∼2 MeV electron flux level across the outer radiation belt exceeds ...
D. J. Weston, I. J. Rae, A. W. Smith, C. E. J. Watt   +3 more
wiley   +1 more source

Laboratory Study of Collisionless Magnetic Reconnection. [PDF]

Space Sci Rev, 2023
Ji H, Yoo J, Fox W, Yamada M, Argall M, Egedal J, Liu YH, Wilder R, Eriksson S, Daughton W, Bergstedt K, Bose S, Burch J, Torbert R, Ng J, Chen LJ.   +15 more
europepmc   +1 more source

Investigating Potential Benefits of Future Sub‐L1 Missions With STEREO‐A

Space Weather, Volume 24, Issue 6, June 2026.
Abstract We present the first statistical study of geomagnetic storm forecasting using in situ data from the STEREO‐A spacecraft as a sub‐L1 monitor. Between November 2022 and June 2024, STEREO‐A crossed the Sun–Earth line, covering longitudinal and radial separations of ±15° $\pm 15{}^{\circ}$ from the Sun–Earth line and 0.01–0.06 au from Earth.
E. Weiler, E. E. Davies, C. Möstl, N. Lugaz, A. Veronig, R. L. Bailey, M. A. Reiss   +6 more
wiley   +1 more source

Particle Acceleration by Magnetic Reconnection in Geospace. [PDF]

Space Sci Rev, 2023
Oka M, Birn J, Egedal J, Guo F, Ergun RE, Turner DL, Khotyaintsev Y, Hwang KJ, Cohen IJ, Drake JF.   +9 more
europepmc   +1 more source