Results 221 to 230 of about 932,549 (275)

Physics of Interplanetary and Interstellar Dust

Space Science Reviews, 1996
Observations of dust in the solar system and in the diffuse interstellar medium are summarized. New measurements of interstellar dust in the heliosphere extend our knowledge about micron-sized and bigger particles in the local interstellar medium. Interplanetary grains extend from submicron- to meter-sized meteoroids. The main destructive effect in the
Eberhard Gr�n, Jiri Svestka
openaire   +2 more sources

Coronal Mass Ejections in September 2017 from Monitoring of Interplanetary Scintillations with the Large Phased Array of the Lebedev Institute of Physics

Astronomy Reports, 2018
Results of monitoring of interplanetary scintillations with the Large Phased Array of the Pushchino Radio AstronomyObservatory at 111 MHz during a period of flare activity of the Sun in the first ten days of September 2017 are presented. Enhancements of scintillations associated with interplanetary coronal mass ejections propagating after limb flares ...
I. V. Chashei, S. A. Tyul’bashev, V. I. Shishov, I. A. Subaev   +3 more
openaire   +2 more sources

Equatorial Electrojet (EEJ) Response to Interplanetary (IP) Shocks

Journal of Geophysical Research: Space Physics, 2023
Interplanetary (IP) shocks are known to cause significant modifications in Earth's magnetospheric and ionospheric current systems. The sudden enhancement of solar wind dynamic pressure (PDyn) associated with IP shocks could induce convection electric ...
B. Nilam, S. Tulasi Ram, M. Ankita, D. Oliveira, A. P. Dimri   +4 more
semanticscholar   +1 more source

BASIC RESULTS FROM THE PROJECT “INVESTIGATION OF THE GEOMAGNETIC DISTURBANCES PROPAGATION TO MID-LATITUDES AND THEIR INTERPLANETARY DRIVERS IDENTIFICATION FOR THE DEVELOPMENT OF MID-LATITUDE SPACE WEATHER FORECAST”

PHYSICS OF AURORAL PHENOMENA, 2023
The project is directed to one of the topical tasks of the solar-terrestrial physics: study of the midlatitude effects of the magnetospheric substorms as a key element of the space weather.
V. Guineva, Rolf Werner, I. Despirak, Natalya Kleimenova, Andris Lubchich, P. Setsko, A. Atanassov, R. Bojilova, L. Raykova, Dimitar Valev   +9 more
semanticscholar   +1 more source

Interplanetary Origins of Some Intense Geomagnetic Storms During Solar Cycle 24 and the Responses of African Equatorial/Low‐Latitude Ionosphere to Them

Journal of Geophysical Research: Space Physics, 2021
The interplanetary origins of eight selected intense geomagnetic storms that occurred during solar cycle 24 and the responses of total electron content (TEC) at eight African equatorial/low‐latitude stations to these storms were investigated.
O. Arowolo, A. Akala, Elijah Oyeyemi
semanticscholar   +1 more source

Physical consistency in modeling interplanetary magnetohydrodynamic fluctuations

Physical Review Letters, 1990
The validity of the Velli, Grappin and Mangeney (1989) model is evaluated. It is argued that the model is incorrect because it mixes different dynamical models, assumes weak nonlinearities, makes predictions that vary with observations, and violates causality.
, Zhou, , Matthaeus, , Roberts, , Goldstein   +3 more
openaire   +2 more sources

Physical Properties of Interplanetary Grains

International Astronomical Union Colloquium, 1976
This paper presents physical properties of interplanetary dust determined by in-situ techniques. It is probable that, like millimeter-sized meteoroids (Jacchia, et al. 1967), most interplanetary dust is cometary matter. Although a cometary origin for interplanetary dust is widely accepted (Whipple 1967) (Millman, 1972) there is currently no unambiguous
D. E. Brownlee, F. Horz, D. A. Tomandl, P. W. Hodge   +3 more
openaire   +1 more source

Physical properties of cometary and interplanetary dust

Planetary and Space Science, 2007
Abstract In the absence of numerous in situ studies, physical properties of cosmic dust may be derived from observations of their light scattering and thermal properties, through numerical simulations making use of realistic assumptions. Estimations about cometary and interplanetary dust composition, structure, size, as well as about their light ...
Levasseur-Regourd, Anny Chantal, Mukai, T., Lasue, Jérémie, Okada, Y.   +3 more
openaire   +2 more sources

Physical Processes on Interplanetary Dust

2001
This chapter discusses physical processes affecting interplanetary dust grains, including processes determining dust formation, growth, disruption, and alteration. Computer simulations and laboratory studies of coagulation and aggregation show that mutual collisions between solid grains determine the growth of solid aggregates in the early solar system
Tadashi Mukai, Akiko M. Nakamura, Jürgen Blum, Robert E. Johnson, Ove Havnes   +4 more
openaire   +1 more source

Interplanetary Coronal Mass Ejections Observed in the Heliosphere: 3. Physical Implications

Space Science Reviews, 2009
We conclude the heliospheric image series with this third and final instalment, where we consider the physical implications of our reconstruction of interplanetary coronal mass ejections from heliospheric imagers. In Paper 1 a review of the theoretical framework for the appearance of ICMEs in the heliosphere was presented and in Paper 2 a model was ...
Timothy A. Howard, S. James Tappin
openaire   +1 more source