Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ap%26ss.322..151z&link_type=abstract
Astrophysics and Space Science, Volume 322, Issue 1-4, pp. 151-154
Astronomy and Astrophysics
Astrophysics
Magnetopause Super-Compression, Coronal Mass Ejection, Laboratory And Pic-Simulations, Chapman-Ferraro Current, Flute-Like Instability, Magnetic Dipole, Laser-Produced Plasma
Scientific paper
We employed the laboratory (Laser-Produced Plasmas, LPP) and numerical (3D/PIC-code) simulations to study the resulting state of very strong compression of magnetopause (MP) by CME with effective energy E 0≥1034 ergs directed to the Earth. During probable formation of an Artificial Magnetosphere (AM, in a flow of CME’ plasma around the Earth) with the MP stand-off at R mp up to (2-3) R E , many catastrophic phenomena could occur in a space and ground networks due to very high curl electric fields induced by world-wide magnetic field’s changes with a SC-rate >50 nT/s. The laboratory models of AM (with R mp ˜0.1-30 cm) were formed around high-field, 1D and 3D magnetic obstacles, overflowing by LPP-blobs with E 0 up to kJ and magnetized ions. The shape and internal structure of a large-scale AM were studied at KI-1 facility of the Russian team using a set of B-dot magnetic probes, while the main goal of UT’s small-AM experiment was to explore a possible shock’s generation and relevant electron acceleration. Preliminary results of KI-1 experiments show that the both R m -size and SC ( E 0) of AM could be described by modified Chapman-Ferraro Scaling, while the whole SC-distribution (in front “one-half” of equatorial plane)—by well-known “Image Dipole” model of the Earth’s magnetopause field.
Brady Parrish
Horton Wendell
Ponomarenko Arnold G.
Vchivkov Konstantin V.
Zakharov Yuri P.
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