Results 21 to 30 of about 1,655 (241)

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

Band-splitting of coronal and interplanetary type II bursts [PDF]

open access: yesAstronomy & Astrophysics, 2003
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Vršnak, Bojan   +2 more
openaire   +2 more sources

Predictions of the arrival time of Coronal Mass Ejections at 1AU: an analysis of the causes of errors [PDF]

open access: yesAnnales Geophysicae, 2004
Three existing models of Interplanetary Coronal Mass Ejection (ICME) transit between the Sun and the Earth are compared to coronagraph and in situ observations: all three models are found to perform with a similar level of accuracy (i.e.
M. Owens, P. Cargill
doaj   +1 more source

Physics of interplanetary dust capture via impact into organic polymer foams [PDF]

open access: yesJournal of Geophysical Research: Planets, 1994
The physics of hypervelocity impacts into foams is of interest because of the possible application to interplanetary dust particle (IDP) capture by spacecraft. We present a model for the phenomena occurring in such impacts into low‐density organic polymer foams.
Anderson, William W., Ahrens, Thomas J.
openaire   +2 more sources

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

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

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

The Physical Nature of Interplanetary Dust as Inferred by Particles Collected at 35 km [PDF]

open access: yesInternational Astronomical Union Colloquium, 1971
Particles were collected at an altitude of 35 km by two flights of a volume-sampling micrometeorite collector. The collection scheme is very sensitive and is capable of collecting a significant number of particles. Many of the particles collected have chemical compositions similar to solar or to iron meteorites.
Donald E. Brownlee   +2 more
openaire   +1 more source

Relating Intermittency and Inverse Cascade to Stochastic Entropy in Solar Wind Turbulence

open access: yesThe Astrophysical Journal Letters, 2023
Turbulent energy transfer in nearly collisionless plasmas can be conceptualized as a scale-to-scale Langevin process. Hence, the statistics of magnetic field fluctuations can be embedded in the framework of stochastic process theory.
Mirko Stumpo   +5 more
doaj   +1 more source

Image Encoding With Blipped Gradients in an Echo Train

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose An MRI scanner was designed and built to encode k$$ k $$‐space points in the spin echoes occurring between 180∘$$ 18{0}^{\circ } $$ pulses in an echo train by using blipped B0$$ {B}_0 $$ gradient pulses applied just prior to those spin echoes.
Logi Vidarsson, Gordon E. Sarty
wiley   +1 more source

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