Open AccessJournal Article
Advances in numerical modeling of astrophysical and space plasmas. part ii. astrophysical force laws on the large scale
TLDR
Peratt et al. as mentioned in this paper focused on the achievements to date in simulating and experimentally producing plasmas scaled to both astrophysical and cosmic plasma dimensions, and outlined the algorithms and computational growth.Abstract:
Advances in the simulation of astrophysical and cosmic plasmas are the direct result of advances in computational capabilities, today consisting of new techniques such as multilevel concurrent simulation, multi-teraflop computational platforms and experimental facilities for producing and diagnosing plasmas under extreme conditions for the benchmarking of simulations. Examples of these are the treatment of mesoscalic plasma and the scaling to astrophysical and cosmic dimensions and the Accelerated Strategic Computing Initiative whose goal is to construct petaflop (1015 floating operations per second) computers, and pulsed power and laser inertial confinement plasmas where megajoules of energy are delivered to highly-diagnosed plasmas. This paper concentrates on the achievements to date in simulating and experimentally producing plasmas scaled to both astrophysical and cosmic plasma dimensions. A previous paper (Part I, Peratt, 1997) outlines the algorithms and computational growth.read more
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References
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Journal ArticleDOI
Electric currents in cosmic plasmas
TL;DR: A number of phenomena which can be understood only from the particle aspect are surveyed in this paper, including the formation of electric double layers, the origin of 'explosive' events like magnetic substorms and solar flares, and the transfer of energy from one region to another.
Physics of the Plasma Universe
TL;DR: In this article, the Birkeland Currents in Cosmic Plasmas and Biot-Savart Law in cosmic plasmas are discussed, as well as double layers in Astrophysics and Synchrotron Radiation.
Journal ArticleDOI
Cosmic Radiation and Radio Stars
Hannes Alfvén,N. Herlofson +1 more
Abstract: The normal radio wave emission from the sun amounts to 10-17 of the heat radiation, and increases during bursts1 to as much as 10-13. If a radio star, e.g., the source in Cygnus, is situated at a distance of 100 light years, its radio emission is of the order of 10-4 of the heat radiation of our sun. It is very un-likely that the atmosphere of any star could be so different from the sun’s atmosphere as to allow a radio emission which is 109 to 1013 times greater, and it seems therefore to be excluded that the source could be as small as a star. The recent discovery2 that the intensity variations of radio stars is a “twinkling” makes it possible to assume larger dimensions.
Book
Physics of the plasma universe
TL;DR: In this paper, the Birkeland Currents in Cosmic Plasmas and Biot-Savart Law in cosmic plasmas are discussed, as well as double layers in Astrophysics and Synchrotron Radiation.
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