Results 231 to 240 of about 932,549 (275)

On the size distribution and physical properties of interplanetary dust grains

Icarus, 1980
Abstract This paper synthesizes information on the size distribution and physical properties of interplanetary dust grains obtained from analyses of lunar microcraters performed until 1979. The different aspects of these analyses (counting methods, simulation, calibrations) are summarized and a large amount of data is collected and discussed in order
L.B. Le Sergeant D'Hendecourt, Ph.L. Lamy   +1 more
openaire   +1 more source

The Solar and Interplanetary Causes of Superstorms (Minimum Dst ≤ −250 nT) During the Space Age

Journal of Geophysical Research: Space Physics, 2019
A comprehensive study of all superstorms (minimum Dst ≤ −250 nT) occurring during the space age (after 1957) and their interplanetary and solar causes has been performed.
Xing Meng, B. Tsurutani, A. Mannucci
semanticscholar   +1 more source

Physical Properties of the Interplanetary Medium

1985
The solar wind is one of the main factors which, along with electromagnetic radiation from the Sun and planets, determines physical conditions in the circumsolar space. This is a more or less continuous plasma flow which is generated in the upper corona of the Sun and carries magnetic fields of solar origin.
openaire   +1 more source

Predicting the physical parameters of interplanetary shock waves using Artificial Neural Networks trained on NASA’s ACE and WIND spacecrafts

2020 4th International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT), 2020
This study aims to develop artificial neural networks to predict the physical parameters of the shock waves in the interplanetary (IP) environment which are closely correlated to the sunspot number as demonstrated in previous studies [1] and [2]. This is done by training the ANNs with the current available data and then use the model to predict for the
ÇAVUŞ, HÜSEYİN, RAHEEM, ABD-UR, ÇOBAN, Gani Çağlar   +2 more
openaire   +2 more sources

Overview of Solar Radio Physics and Interplanetary Disturbances

2004
Solar radio emission has been observed from a few hundred GHz down to a few kHz and has revealed a large variety of phenomena. Thanks to this broad frequency window, solar phenomena can be probed from a fraction of a solar radius out to 1 AU and beyond.
openaire   +1 more source

Physics of interplanetary magnetic flux ropes: Toward prediction of geomagnetic storms

Advances in Space Research, 2000
The purpose of this review is to examine the possibility of predicting large geomagnetic storms from solar observations. We focus on three topics: (1) the relationship between coronal mass ejections and interplanetary magnetic flux ropes (hereinafter called flux ropes for simplicity), (2) the role of flux ropes in geomagnetic storms, and (3) further ...
openaire   +1 more source

Corotating and Propagating Disturbances in the Solar Wind Based on Monitoring of Interplanetary Scintillations at the LPA Radio Telescope of the Lebedev Physical Institute in 2017

Astronomy Reports, 2020
Monitoring of interplanetary scintillations in 2017 is used as a basis for analyzing the dynamics of scintillation levels in periods preceding the arrival at the Earth of eight large-scale disturbances in the solar wind giving rise to strong geomagnetic storms.
I. V. Chashei, T. O. Lebedeva, S. A. Tyul’bashev, I. A. Subaev   +3 more
openaire   +1 more source

The role of collisions with interplanetary particles in the physical evolution of comets

The Moon and the Planets, 1981
Effects of collisions with interplanetary particles are investigated. To this purpose, collision probabilities for comets with different orbital elements are computed. It is found that collisions may have a non-negligible effect on the physical evolution of comets.
openaire   +1 more source

Physical interpretation of interdisciplinary solar/interplanetary observations relevant to the 27–29 June 1980 SMY/STIP event no. 5

Advances in Space Research, 1982
Abstract A sequence of six well defined interplanetary structures (magnetic clouds) was identified in the solar wind and magnetic field measurements of Helios-1 from 29 June-01 July, 1980. (location 0.64–0.67 AU, C. Long. ∼165°, C. Lat. ∼5.8°).
S.M.P. McKenna-Lawlor, A.K. Richter
openaire   +1 more source

Human Life Support During Interplanetary Travel and Domicile Part Vl: Generic Modular Flow Schematic for Hybrid Physical/Chemical-Biological Life Support Systems

SAE Technical Paper Series, 1992
<div class="htmlview paragraph">A model is being developed to quantitatively compare and thus assist in the selection of systems and technology options for defined missions envisioned in NASA's Space Exploration Initiative. It consists of a modular top-down hierarchical break-down of the life support systems (LSS) into subsystems, and further ...
Gani B. Ganapathi, P.K. Seshan, Joseph Ferrall, Naresh Rohatgi   +3 more
openaire   +1 more source