Results 61 to 70 of about 4,343 (197)

Driving Dynamical Inner‐Heliosphere Models With In Situ Solar Wind Observations

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Accurately reconstructing the solar wind throughout the inner heliosphere is essential for understanding solar–terrestrial interactions and improving space‐weather forecasts. Conventional reconstruction methods rely on photospheric magnetic field observations and coronal models to estimate solar wind conditions near the Sun, typically at 0.1 ...
M. J. Owens, L. A. Barnard, H. Turner, D. Gyeltshen, N. Edward‐Inatimi, J. O’Donoghue, M. Lockwood, S. Watson, M. Rutala, C. M. Jackman, P. Riley   +10 more
wiley   +1 more source

Formation of Rotational Discontinuities in Compressive three-dimensional MHD Turbulence

, 2015
Measurements of solar wind turbulence reveal the ubiquity of discontinuities. In this study, we investigate how the discontinuities, especially rotational discontinuities (RDs), are formed in magnetohydrodynamic (MHD) turbulence.
Feng, Xueshang, He, Jiansen, Marsch, Eckart, Tu, Chuanyi, Wang, Linghua, Wang, Xin, Yang, Liping, Zhang, Lei, Zhang, Shaohua   +8 more
core   +1 more source

Plasma Acceleration by Magnetic Tension Forces in the Martian Magnetotail: MAVEN Observations

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract The Martian magnetotail is a dynamic region where several processes contribute to plasma acceleration. Here, we analyze ∼5 ${\sim} 5$ years of Mars Atmosphere and Volatile EvolutioN (MAVEN) data to evaluate the role of magnetic tension forces in driving plasma acceleration within current sheets in the tail. Based on magnetic field measurements,
Norberto Romanelli, Ronan Modolo, Gina A. DiBraccio, Jacob R. Gruesbeck, Shaosui Xu, Christopher M. Fowler, Eduard Dubinin, Jasper S. Halekas, Shannon M. Curry, Robert J. Lillis, Jared R. Espley, Kathleen G. Hanley, Yingjuan Ma, Suranga Ruhunusiri, David L. Mitchell, Christian Mazelle   +15 more
wiley   +1 more source

Observations of a new foreshock region upstream of a foreshock bubble's shock

Geophysical Research Letters, 2016
Earth's foreshock is a region within the solar wind upstream of Earth's bow shock filled with backstreaming solar wind particles reflected at the shock.
Terry Z. Liu, Heli Hietala, Vassilis Angelopoulos, Drew L. Turner   +3 more
doaj   +1 more source

Two‐Dimensional Motions of Diffuse Auroral Patches Under Upstream Dynamic Pressure Enhancements of the Bow Shock

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract In this study, we identified 51 dayside diffuse auroral patches and examined their two‐dimensional evolutions by using the Time History of Events and Macroscale Interactions during Substorms probes and the ground‐based all‐sky imager at the South Pole.
Xinyu Xu, Boyi Wang, Yukitoshi Nishimura, Yusuke Ebihara, Yuda Zhi, Yi Wang, Xueshang Feng   +6 more
wiley   +1 more source

Comparing Plasma Anisotropy Associated with Solar Wind Discontinuities and Alfvénic Fluctuations

The Astrophysical Journal
Solar wind magnetic field fluctuations exhibit a complex multiscale nature, often encompassing ion-scale discontinuities and MHD-scale Alfvénic fluctuations.
Yangyang Shen, Anton Artemyev, Vassilis Angelopoulos, Terry Z. Liu, Ivan Vasko   +4 more
doaj   +1 more source

Generation of Anomalous Flows Near the Bow Shock by Its Interaction with Interplanetary Discontinuities [PDF]

Journal of Geophysical Research: Space Physics, 1997
Two‐dimensional hybrid simulations using a curvilinear coordinate system are carried out to study the interaction of the Earth's bow shock (BS) with an interplanetary directional discontinuity. In particular, plasma flow patterns are examined. In the interaction of the bow shock with an interplanetary tangential discontinuity (TD), a bulge of magnetic ...
openaire   +1 more source

A Variational Approach for Modeling the Inductive Response of Earth's Mantle to Time‐Varying External Geomagnetic Source

Earth and Space Science, Volume 12, Issue 12, December 2025.
Abstract A mathematical and numerical framework is developed for modeling Earth's magnetic field and optimizing the trajectory of the whole system using geomagnetic observations. The conventional approach is adopted to model Earth's magnetic field in the source‐free region via the Gauss coefficient, for which the fast dynamical component for the mantle‐
Kuan Li
wiley   +1 more source

Interplanetary boundary layers at 1 AU [PDF]

The structure and nature of discontinuities in the interplanetary magnetic field at 1 AU in the period March 18, 1971 to April 9, 1971, is determined by using high-resolution magnetic field measurements from Explorer 34.
Burlaga, L. F., Lemaire, J. F., Turner, J. M.   +2 more
core   +1 more source

∇ ⋅ B, Outer Boundary, and Biot–Savart in Magnetosphere MHD Simulations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract We examine the size of ∇⋅B $\nabla \cdot \mathbf{B}$ and outer surface boundary integrals in estimating the surface magnetic field from magnetohydrodynamic (MHD) simulations. Maxwell's equations tell us ∇⋅B=0 $\nabla \cdot \mathbf{B}=0$, which may be violated due to numerical error. MHD models such as the Space Weather Modeling Framework (SWMF)
Dean Thomas, Robert S. Weigel, Gary Quaresima, Antti Pulkkinen, Daniel T. Welling   +4 more
wiley   +1 more source