Results 31 to 40 of about 31,874 (242)

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

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

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

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

An analysis of interplanetary solar radio emissions associated with a coronal mass ejection

open access: yes, 2016
Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth-directed. Here we report a rare instance with comprehensive in situ and remote sensing observa- tions of a CME combining white ...
Bale, SD   +15 more
core   +3 more sources

Interactions of energetic electrons with ULF waves triggered by interplanetary shock: Van Allen Probes observations in the magnetotail [PDF]

open access: yes, 2014
We present in situ observations of a shock-induced substorm-like event on 13 April 2013 observed by the newly launched Van Allen twin probes. Substorm-like electron injections with energy of 30-500 keV were observed in the region from L∼5.2 to 5.5 ...
Blake, J. B.   +11 more
core   +2 more sources

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

Effects of standard and modified gravity on interplanetary ranges

open access: yes, 2011
We numerically investigate the impact on the two-body range by several Newtonian and non-Newtonian dynamical effects for some Earth-planet (Mercury, Venus, Mars, Jupiter, Saturn) pairs in view of the expected cm-level accuracy in some future planned or ...
Giannantonio T.   +3 more
core   +1 more source

Unique Observations of a Geomagnetic SI^+ -- SI^- Pair: Solar Sources and Associated Solar Wind Fluctuations

open access: yes, 2010
The paper describes the occurrence of a pair of oppositely directed sudden impulses (SI), in the geomagnetic field ($\Delta$X), at ground stations, called SI${^{+}}$ -- SI${^{-}}$ pairs, that occurred between 1835 UT and 2300 UT on 23 April 1998. The SI${
A. C. Das   +53 more
core   +1 more source

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