Results 11 to 20 of about 1,655 (241)

Signatures of interplanetary transients behind shocks and their associated near-surface solar activity [PDF]

open access: yesAnnales Geophysicae, 1998
Interplanetary transients with particular signatures different from the normal solar wind have been observed behind interplanetary shocks and also without shocks.
S. Bravo, X. Blanco-Cano
doaj   +1 more source

Observations of ionospheric flows and particle precipitation following a Sudden Commencement [PDF]

open access: yesAnnales Geophysicae, 2000
On May 4, 1998, at 0227 UT an interplanetary shock crossed the WIND spacecraft, and half an hour later a Sudden Commencement occurred. Coinciding with the Sudden Commencement a rapid intensification of the flux of particle precipitation into the ...
E. Nielsen, E. Nielsen, F. Honary
doaj   +1 more source

Quantifying the Agyrotropy of Proton and Electron Heating in Turbulent Plasmas

open access: yesThe Astrophysical Journal, 2023
An important aspect of energy dissipation in weakly collisional plasmas is that of energy partitioning between different species (e.g., protons and electrons) and between different energy channels.
Yan Yang   +10 more
doaj   +1 more source

PHYSICAL CHARACTERISTICS OF CORONAL REGION DRIVING OUT THE INTERPLANETARY SHOCK [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2008
Using the solar wind data of 2000 observed by ACE, We classified the interplanetary shock on basis of shock driver. We examined the physical properties of shock drivers such as the ratio of charge states(O7/O6) and thermal index(I_{th}). Most of 51 interplanetary shocks are driven by interplanetary coronal mass ejections(ICME; magnetic cloud and ejecta)
Su Yeon Oh, Yu Yi
openaire   +2 more sources

Planar Magnetic Structures Downstream of Coronal Mass Ejection–driven Shocks in the Inner Heliosphere

open access: yesThe Astrophysical Journal, 2023
Planar magnetic structures (PMSs), characterized by interplanetary magnetic field vectors remaining parallel to a specific plane, are commonly observed in the solar wind, especially in the sheath region of interplanetary coronal mass ejections (ICMEs ...
Mengsi Ruan   +9 more
doaj   +1 more source

From the Sun’s atmosphere to the Earth’s atmosphere: an overview of scientific models available for space weather developments [PDF]

open access: yesAnnales Geophysicae, 2002
Space weather aims at setting operational numerical tools in order to nowcast, forecast and quantify the solar activity events, the magnetosphere, ionosphere and thermosphere responses and the consequences on our technological societies.
C. Lathuillère   +7 more
doaj   +1 more source

Betatron Acceleration of Suprathermal Electrons within a Small-scale Flux Rope in the Solar Wind

open access: yesThe Astrophysical Journal Letters, 2023
A growing body of evidence from observations, theories, and simulations indicates that particles can be effectively accelerated in solar wind regions filled with dynamic small-scale flux ropes (FRs).
Weiduo Meng   +9 more
doaj   +1 more source

Physical Properties of the Interplanetary Dust [PDF]

open access: yesInternational Astronomical Union Colloquium, 1971
The interplanetary dust may be composed of cometary material, interstellar grains, debris from asteroidal collisions, primordial material formed by direct condensation, or contributions from all of these sources. Before we can determine the origin of the dust, we need to know its physical nature, spatial distribution, and the dynamical forces that act ...
openaire   +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

Observations of interplanetary scintillation during the 1998 Whole Sun Month: a comparison between EISCAT, ORT and Nagoya data [PDF]

open access: yesAnnales Geophysicae, 2000
Observations of interplanetary scintillation (IPS) allow accurate solar wind velocity measurements to be made at all heliographic latitudes and at a range of distances from the Sun.
P. J. Moran   +11 more
doaj   +1 more source

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