Naslov
Influence of the CME orientation on the ICME propagation

Autori
Martinić, Karmen ; Dumboivć, Mateja ; Vršnak, Bojan

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

Skup
XVIIth Hvar Astrophysical Colloquium

Mjesto i datum
Online, 20.09.2021. - 24.09.2021

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Coronal mass ejection ; tilt ; GCS

Sažetak
Beyond a certain distance, the ICME propagation becomes mostly governed by the interaction of the ICME and the ambient solar wind. Configuration of the interplanetary magnetic field and features of the related ambient solar wind in the ecliptic and meridional plane are different. Therefore, one can expect that the inclination of the CME flux rope axis i.e. tilt, influences the propagation of the ICME itself. In order to study the relation between the tilt parameter and the ICME propagation we investigated isolated Earth- impacting CME-ICME evets in the time period from 2010. to 2014. We determined the CME tilt in the “near-Sun” environment from the 3D reconstruction of the CME, obtained by the Graduated Cylindrical Shell model using coronagraphic images provided by the STEREO and SOHO missions. We determined the tilt of the ICME in the “near-Earth” environment using in-situ data. We constrained our study to CME-ICME events that show no evidence of rotation while propagating, i.e. have a similar tilt in the “near-Sun” and “near-Earth” environment. We present preliminary results of our study and discuss their implications for space-weather forecasting using the drag-based(ensemble) [DB(E)M] model of heliospheric propagation.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Geofizika, Interdisciplinarne prirodne znanosti

POVEZANOST RADA