Results 51 to 60 of about 2,583 (231)

Interplanetary magnetic field control of dayside transient event occurrence and motion in the ionosphere and magnetosphere [PDF]

Annales Geophysicae, 2004
The pressure pulse model for dayside transient ionospheric events predicts dawnward moving events at and prior to local noon during periods of spiral interplanetary magnetic field (IMF) orientation, but duskward moving events at and after local noon ...
G. I. Korotova, D. G. Sibeck, H. J. Singer, T. J. Rosenberg, M. J. Engebretson   +4 more
doaj   +1 more source

Structure of the Turbulent Interplanetary Magnetic Field [PDF]

The Astrophysical Journal, 2006
We show that two widely used but apparently different models of the turbulent interplanetary magnetic field are closely related. One of these is the so-called quasi-static turbulence model, in which interplanetary magnetic field fluctuations are generated at a source surface near the Sun by random transverse plasma motions (such as supergranulation at ...
J. Giacalone, J. R. Jokipii, W. H. Matthaeus   +2 more
openaire   +1 more source

Local Evolution of a Prenoon Drainage Plume

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Plasmaspheric drainage plumes are typically observed in the postnoon sector during geomagnetic storms, but their local evolution in the prenoon sector remains poorly understood. Here, we report in situ observations from the Van Allen Probe, revealing multiple localized enhancements in cold electron density near apogee in the prenoon sector ...
Suk‐Bin Kang, Mei‐Ching Fok, Cristian Ferradas, Alex Glocer, Megha Pandya, J. D. Huba   +5 more
wiley   +1 more source

Inner plasma structure of the low-latitude reconnection layer [PDF]

, 2012
We report a clear transition through a reconnection layer at the low-latitude magnetopause which shows a complete traversal across all reconnected field lines during northwestward interplanetary magnetic field (IMF) conditions.
Liu, R. -Y., Hu, H.Q., Hasegawa, H., Escoubet, P., Yang, Z. -W., Yang, H.-G., Shi, J.-K., Constantinescu, D., Lockwood, M., Wang, J., Hu, H. -Q., Pu, Z. -Y., Yang, H-G., Liu, R.-Y., Frey, H., Pu, Z.-Y., Yang, Z.-W., Fazakerley, A. N., Bogdanova, Y. V., Shen, C., Zhang, B.-C., Shi, J. -K., Dunlop, M. W., Lavraud, B., Liu, R.Y., Zhang, Q.-H., Hu, H.-Q., Volwerk, M., Berchem, J., Zhang, B. -C., Zhang, Q.H., Wild, J. A., Sibeck, D., Zhang, B.C., Zhang, Q. -H., Taylor, M. G. G. T., Pu, Z.Y., Yang, Z.W., Shi, J.K., Yang, H. -G.   +39 more
core   +1 more source

Interplanetary Magnetic Field Curvature and Its Role in Particle Acceleration: Magnetospheric Multiscale and Solar Orbiter Observations

The Astrophysical Journal
The curvature of the magnetic field plays a crucial role in magnetic confinement, magnetic reconnection, particle heating, and acceleration. Though the magnetic field curvature has been sufficiently investigated in the terrestrial magnetosheath, there is
D. K. Hu, Y. Y. Liu, J. B. Cao, C. M. Liu, Y. T. Song   +4 more
doaj   +1 more source

Probing the magnetic topology of coronal mass ejections by means of Ulysses/HI-SCALE energetic particle observations [PDF]

Annales Geophysicae, 2000
In this work, solar flare energetic particle fluxes (Ee ≥ 42 keV) observed by the HI-SCALE instrument onboard Ulysses, a spacecraft that is probing the heliosphere in 3-D, are utilized as diagnostics of the large-scale structure and topology of
O. Malandraki, O. Malandraki, E. T. Sarris, E. T. Sarris, P. Trochoutsos, P. Trochoutsos   +5 more
doaj   +1 more source

Martian Magnetotail Neutral Sheet Asymmetry Driven by Heavy Planetary Pickup Ions

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract In the induced magnetotail of Mars, the neutral sheet is an important channel for atmospheric ion escape, yet the role of heavy planetary pickup ions in shaping its geometry has been unclear. Using three‐dimensional hybrid simulations, we demonstrate that these ions induce a global neutral sheet asymmetry via mass loading.
Jingyi Zhou, Zhenpeng Su, Kaijun Liu, Rentong Lin, Esa Kallio, Riku Jarvinen, Yuming Wang   +6 more
wiley   +1 more source

Magnetosonic Mach number dependence of the efficiency of reconnection between planetary and interplanetary magnetic fields [PDF]

, 2009
We present a statistical investigation into the magnetosonic Mach number dependence of the efficiency of reconnection at the Earth's dayside magnetopause.
J. D. Nichols, S. W. H. Cowley, Milan, S.E., T. K. Yeoman, S. E. Milan, S. V. Badman, A. Grocott, Nichols, J.D., Grocott, Adrian, Cowley, S.W.H., Yeoman, T.K., Badman, Sarah V.   +11 more
core   +1 more source

A Fokker–Planck Framework for Studying the Variability of the Magnetic Field Direction in the Alfvénic Streams of the Solar Wind

The Astrophysical Journal Letters
Turbulent rotations of the magnetic field vector are observed in the Alfvénic streams of the solar wind where the magnetic field strength remains close to a constant. They can lead to reversals of the radial magnetic field component or switchbacks. It is
N. H. Bian, Gang Li
doaj   +1 more source

Modelling interplanetary CMEs using magnetohydrodynamic simulations [PDF]

Annales Geophysicae, 2002
The dynamics of Interplanetary Coronal Mass Ejections (ICMEs) are discussed from the viewpoint of numerical modelling. Hydrodynamic models are shown to give a good zero-order picture of the plasma properties of ICMEs, but they cannot model the ...
P. J. Cargill, P. J. Cargill, J. M. Schmidt   +2 more
doaj   +1 more source