Naslov
Formation and evolution of large-amplitude waves in the Solar corona

Autori
Lulić, Slaven ; Vršnak, Bojan ; Žic, Tomislav ; Kienreich, Ines W. ; Muhr, Nicole ; Temmer Manuela ; Veronig, Astrid M.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Skup
XIIth Hvar Astrophysical Colloquium: THE SUN AND HELIOSPHERE

Mjesto i datum
Hvar, Hrvatska, 03.09.2012. - 07.09.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Shock waves ; Magnetohydrodynamics (MHD) ; Sun: corona ; Sun: coronal mass ejections (CMEs)

Sažetak
Impulsive expansion of coronal mass ejections frequently results in the formation of global MHD wave in the solar corona. Such a large-amplitude disturbance is often observed as a EUV coronal wave and chromospheric Moreton wave. We present results of numerical simulations linking the low-coronal signatures of the wave with its chromospheric counterpart. The coronal wave is created by an explosive eruption of the coronal arcade that is anchored in the chromosphere/photosphere. Results of simulations are quantitatively analyzed and confronted with the observations, as well as with results of a simple analytical modeling. It is shown that the lateral expansion of the arcade is viable of creating the coronal wave, having characteristics that are fully consistent with the observations. This work has received funding from European Physical Society and the European Commission FP7 Projects eHEROES (284461) and COMESEP (263252).

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA