Results 11 to 20 of about 31,874 (242)

Relationship of Transport Coefficients with Statistical Quantities of Charged Particles

open access: yesThe Astrophysical Journal, 2023
In previous studies, a general spatial transport equation was derived from the Fokker–Planck equation. The latter equation contains an infinite number of spatial derivative terms T _n = κ _nz ∂ ^n F /∂ z ^n with n = 1, 2, 3, ⋯ .
J. F. Wang, G. Qin
doaj   +1 more source

Long-duration high-energy proton events observed by GOES in October 1989 [PDF]

open access: yesAnnales Geophysicae, 1998
We consider the prolonged injection of the high-energy (>10 MeV) protons during the three successive events observed by GOES in October 1989. We apply a solar-rotation-stereoscopy approach to study the injection of the accelerated particles from ...
A. Anttila   +3 more
doaj   +1 more source

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

open access: yesAnnales 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   +4 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

On the solar origin of interplanetary disturbances observed in the vicinity of the Earth [PDF]

open access: yesAnnales Geophysicae, 2003
The solar origin of 40 interplanetary disturbances observed in the vicinity of the Earth between January 1997 and June 1998 is investigated in this paper.
N. Vilmer   +4 more
doaj   +1 more source

Detection of zero anisotropy at 5.2 AU during the November 1998 solar particle event: Ulysses Anisotropy Telescopes observations [PDF]

open access: yesAnnales Geophysicae, 2000
For the first time during the mission, the Anisotropy Telescopes instrument on board the Ulysses spacecraft measured constant zero anisotropy of protons in the 1.3-2.2 MeV energy range, for a period lasting more than three days.
S. Dalla   +5 more
doaj   +1 more source

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

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

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

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