Results 41 to 50 of about 932,549 (275)

In situ local shock speed and transit shock speed [PDF]

open access: yesAnnales Geophysicae, 1998
A useful index for estimating the transit speeds was derived by analyzing interplanetary shock observations. This index is the ratio of the in situ local shock speed and the transit speed; it is 0.6–0.9 for most observed shocks.
S. Watari, T. Detman
doaj   +1 more source

Three-Dimensional Simulations of Solar Wind Preconditioning and the 23 July 2012 Interplanetary Coronal Mass Ejection [PDF]

open access: yesSolar Physics, 2020
Predicting the large-scale eruptions from the solar corona and their propagation through interplanetary space remains an outstanding challenge in solar- and helio-physics research.
R. Desai   +5 more
semanticscholar   +1 more source

Magnetic topology of coronal mass ejection events out of the ecliptic: Ulysses/HI-SCALE energetic particle observations [PDF]

open access: yesAnnales Geophysicae, 2003
Solar energetic particle fluxes (Ee > 38 keV) observed by the ULYSSES/HI-SCALE experiment are utilized as diagnostic tracers of the large-scale structure and topology of the Interplanetary Magnetic Field (IMF) embedded within two well ...
O. E. Malandraki   +3 more
doaj   +1 more source

What causes the variations of the peak intensity of CIR accelerated energetic ion fluxes? [PDF]

open access: yesAnnales Geophysicae, 1998
The variation of the peak intensity of energetic ions accelerated at CIR related shocks in the interplanetary medium as observed by instruments on board of ULYSSES during its pass towards the south polar region and from the north polar region back to ...
E. Keppler
doaj   +1 more source

The floor in the interplanetary magnetic field: Estimation on the basis of relative duration of ICME observations in solar wind during 1976-2000

open access: yes, 2009
To measure the floor in interplanetary magnetic field and estimate the time- invariant open magnetic flux of Sun, it is necessary to know a part of magnetic field of Sun carried away by CMEs.
C.T. Russell   +27 more
core   +1 more source

Physical Processes and Models of Interplanetary Responses: Suggested Theoretical Studies [PDF]

open access: yesSymposium - International Astronomical Union, 1980
Three ways to improve the theory and therefore the understanding of the physical processes in the interplanetary medium (during both quiet and disturbed periods of solar activity) are suggested. They are: (1) the development and consequently the use of higher order moments (fluid) equations as well as of more realistic closure conditions and transport ...
openaire   +1 more source

The active processes in comets as indicators of physical conditions in the interplanetary space [PDF]

open access: yesAstronomical School’s Report, 2000
The results of researches of cometary flash activity obtained by authors are generalized. On the basis of this results the new evidences of relation between comets' light curves and level of solar activity are enunciated. A relation of cometary flash activity with heliocentric distances discovered by authors is permit the light curves of comets will be
V. S. Filonenko, K. I. Churyumov
openaire   +2 more sources

Generic Magnetic Field Intensity Profiles of Interplanetary Coronal Mass Ejections at Mercury, Venus, and Earth From Superposed Epoch Analyses [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 2019
We study interplanetary coronal mass ejections (ICMEs) measured by probes at different heliocentric distances (0.3–1 AU) to investigate the propagation of ICMEs in the inner heliosphere and determine how the generic features of ICMEs change with ...
M. Janvier   +10 more
semanticscholar   +1 more source

Thermo-physical properties of 162173 (1999 JU3), a potential flyby and rendezvous target for interplanetary missions [PDF]

open access: yesAstronomy & Astrophysics, 2010
6 pages, 5 figures, 2 tables, accepted for publication in A&A (date of acceptance 05/Nov/2010)
Müller, T.   +17 more
openaire   +3 more sources

Solar Sector Structure

open access: yes, 2015
The interplanetary magnetic field near has a characteristic "sector" structure that reflects its polarity relative to the solar direction. Typically we observe large-scale coherence in these directions, with two or four "away" or "towards" sectors per ...
Hannah, Iain   +2 more
core   +1 more source

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