Results 11 to 20 of about 35,714 (290)

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

open access: yesAnnales 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   +5 more
doaj   +1 more source

Does Magnetic Reconnection Occur in the Near Lunar Surface Environment?

open access: yesGeophysical Research Letters, 2023
The near lunar surface contains small‐scale magnetic field structures that provide a natural test bed for observing plasmas with a non‐zero Hall electric field, as well as potentially facilitating electron‐only reconnection.
R. P. Sawyer   +7 more
doaj   +1 more source

The influence of the interplanetary medium on SuperDARN radar scattering occurrence [PDF]

open access: yesAnnales Geophysicae, 2000
The effects of the characteristics of the interplanetary medium on the radar scattering occurrence, related to the whole array of SuperDARN radars installed in the Northern Hemisphere, have been studied over a two-year period.
P. Ballatore   +3 more
doaj   +1 more source

Analysis of double-step response to an interplanetary shock in the dayside magnetosphere [PDF]

open access: yesAnnales Geophysicae, 2014
We present an analysis of double-step magnetic field enhancement caused by interplanetary (IP) shock impacts on the Earth's magnetosphere. The structures were observed by the GOES-8, 10, 11, and 12 spacecraft in the dayside geostationary orbit ...
K. Andréeová   +4 more
doaj   +1 more source

Magnetic field line lengths inside interplanetary magnetic flux ropes [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2015
AbstractWe report on the detailed and systematic study of field line twist and length distributions within magnetic flux ropes embedded in interplanetary coronal mass ejections (ICMEs). The Grad‐Shafranov reconstruction method is utilized together with a constant‐twist nonlinear force‐free (Gold‐Hoyle) flux rope model to reveal the close relation ...
Qiang Hu, Jiong Qiu, Sam Krucker
openaire   +2 more sources

Hysteresis loops of Cosmic Ray intensity decreases versus solar and interplanetary parameters [PDF]

open access: yesAnnales Geophysicae, 2007
The purpose of this study was to examine the correlation between CR (Cosmic Ray) intensity and solar, interplanetary and terrestrial parameters. The hysteresis loops of (CR) versus those of several solar parameters showed narrow loops in even cycles ...
R. P. Kane
doaj   +1 more source

Effects of solar wind magnetosphere coupling recorded at different geomagnetic latitudes: Separation of directly-driven and storage/release systems [PDF]

open access: yes, 2008
The effect on geomagnetic activity of solar wind speed, compared with that of the strength of the interplanetary magnetic field, differs with geomagnetic latitude.
A. P. Rouillard   +22 more
core   +1 more source

Multifractal analysis of interplanetary magnetic field obtained during CME events [PDF]

open access: yesAnnales Geophysicae, 2012
In this paper, we have analyzed the interplanetary magnetic field (IMF) obtained by ACE satellite during the coronal mass ejection events. The characterization of the IMF fluctuations was performed using the singular power spectra deviations obtained ...
M. J. A. Bolzan, R. R. Rosa
doaj   +1 more source

Modelling interplanetary CMEs using magnetohydrodynamic simulations [PDF]

open access: yesAnnales 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   +2 more
doaj   +1 more source

STUDYING AURORAL ACTIVITY USING THE SME INDEX AT THE MAGNETIC STORM MAIN PHASE DURING CIR AND ICME EVENTS

open access: yesSolar-Terrestrial Physics, 2021
In this paper, we examine the relationship of the SME index with magnetic storm characteristics and interplanetary medium parameters during the main phase of magnetic storms caused by CIR and ICME events.
R.N. Boroyev, M.S. Vasiliev
doaj   +1 more source

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