Naslov
MHD Waves and Shocks Generated during Magnetic Field Reconnection

Autori
Bárta, Miroslav ; Karlický, Marian ; Vršnak, Bojan ; Goossens, M.

Izvornik
Central European Astrophysical Bulletin (1845-8319) 31 (2007); 165-180

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
solar flares; magnetic reconnection; MHD waves

Sažetak
We use a 2D MHD model of magnetic field reconnection to investigate if and how bursts of reconnection activity, changes of the magnetic field and shock wave generation are related. We found that major bursts of power dissipated into Joule heat occur during topological transitions of the magnetic field structure. These bursts are followed by shocks and waves. Along the plasma outflow jet not only MHD waves, but also ion-sound shocks are formed. After the phase of more or less quiet reconnection (Petschek-type) the tearing mode produces plasmoids. The interactions of these plasmoids are associated with further bursts of the reconnection activity and a complex structure of shock waves. Finally, all these processes are discussed as possible sources of various radio bursts.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Vol 31 (2007): Proceedings of 8th Hvar Astrophysical Colloquium: "Dynamical Processes in the Solar Atmosphere"

POVEZANOST RADA