NDLI: Istp solar maximum extended science program

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Istp solar maximum extended science program

Content Provider	NASA Technical Reports Server (NTRS)
Author	Ashour-Abdalla, Maha
Copyright Year	2002
Description	We have studied the entry of solar energetic particles (SEPS) into the magnetosphere by following particles in the time dependent magnetic and electric field from global magnetohydrodynamic (MHD) simulations of the magnetosphere. The MHD simulations can either be for idealized interplanetary magnetic field (IMF) conditions, or for upstream conditions measured by spacecraft. An important part of the analysis is understanding the response of the magnetosphere to the IMF conditions. In the idealized case, the MHD simulation included a steady interplanetary magnetic field (IMF) B(sub x), velocity and density, while the B(sub y) and B(sub z) components were varied from southward IMF to dawnward and finally to northward IMF. We launched more than ten million protons, as well as about 1 million He-3 ions and a few thousand electrons upstream of the magnetosphere into the solar wind. They were initialized using a kappa distribution, which is a power law distribution with a power law coefficient of 1.5 at high energies. The particles had energies between 0. 1 and 50 MeV. The particles were run in time dependent MHD fields that were advanced in time as the particles moved through the system.
File Size	187183
Page Count	8
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20020080691
Archival Resource Key	ark:/13960/t5bc8xh2z
Language	English
Publisher Date	2002-01-01
Access Restriction	Open
Subject Keyword	Solar Physics Earth Magnetosphere Protons Time Dependence Magnetohydrodynamics Helium Isotopes Solar Activity Effects Computerized Simulation Magnetic Storms Energetic Particles Interplanetary Magnetic Fields Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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