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Pregled bibliografske jedinice broj: 863288

Zbornik radova

Autori: Skender, Marina; Lapenta, Giovanni
Naslov: Instability of the Sweet-Parker-like current layer
( Instability of the Sweet-Parker-like current layer )
Izvornik: / L. Damé & A. Hady (ur.). - Cairo : Cairo University Press , 2010. 147-153.
Skup: International Association of Geomagnetism and Aeronomy, 2nd Symposium: Solar Wind - Space Environment Interaction
Mjesto i datum: Kairo, Egipat, 4.-8. XII. 2009.
Ključne riječi: quasiequlibrium current sheet, impulsive bursty reconnection, tearing-mode instability, aspect ratio
( quasiequilibrium current sheet, impulsive bursty reconnection, tearing-mode instability, aspect ratio )
Sažetak:
A two−dimensional reconnecting current sheet is studied numerically in magnetohydrodynamics approach with the aim of getting more insight on the nature of the instability taking place. At studied value of Lundquist number S=10^4 and Reynolds number R=10^4 a Sweet–Parker–like current sheet is observed to form, followed by the fragmentation, which leads to the fast reconnection. The Sweet–Parker–like current sheet does not reach the stationary state characteristic of the Sweet–Parker reconnection. Rather, it evolves very slowly and is therefore identified as a quasiequilibrium current sheet. It has increasing ratio of the length and width (aspect ratio) whose maximum is found to correspond with the detected fragmentation. This qualitative scenario is confirmed for the simulations with the initial Harris and force–free equilibria applied, for the periodic and open–boundary conditions with uniform and non–uniform grid prescribed, respectively, and for varying sizes of the numerical system.
Vrsta sudjelovanja: Pozvano
Vrsta prezentacije u zborniku: Cjeloviti rad (više od 1500 riječi)
Vrsta recenzije: Međunarodna recenzija
Izvorni jezik: eng
Kategorija: Znanstveni
Znanstvena područja:
Fizika
Puni text rada: 863288.Marina_D4.pdf (tekst priložen 23. Vel. 2017. u 23:12 sati)
URL Internet adrese: http://solarnet.projet.latmos.ipsl.fr/IAGA2/IAGA2-Skender-Lapenta.pdf
Upisao u CROSBI: Marina Skender (Marina.Skender@irb.hr), 23. Vel. 2017. u 22:52 sati



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