HR: 1400h
AN: SH23C-06    [Abstracts]
TI: Influence of the Magnetic Cloud Propagation on the Local Shape of the Heliospheric Current Sheet
AU: * Blanco, J J
EM: juanjo.blanco@uah.es
AF: SRG-Alcala, Dto. Fisica, Universidad de Alcala,Crta. Madrid-Barcelona km. 33,6,28871 Alcalá de Henares-Madrid-SPAIN, Alcala de Henares, Mad 28871, Spain
AU: Hidalgo, M A
EM: miguel.hidalgo@uah.es
AF: SRG-Alcala, Dto. Fisica, Universidad de Alcala,Crta. Madrid-Barcelona km. 33,6,28871 Alcalá de Henares-Madrid-SPAIN, Alcala de Henares, Mad 28871, Spain
AU: Rodriguez-Pacheco, J
EM: javier.pacheco@uah.es
AF: SRG-Alcala, Dto. Fisica, Universidad de Alcala,Crta. Madrid-Barcelona km. 33,6,28871 Alcalá de Henares-Madrid-SPAIN, Alcala de Henares, Mad 28871, Spain
AB: The relationship between Magnetic Clouds (MC) and the Heliospheric Current Sheet (HCS) is not completely understood. The presence of current sheets close to the MCs passage has been widely observed. The main problem is to establish if those currents are originated along the MC travel through the solar wind or, in the opposite hand, they already existed previously to the MC arrival to the observation point and therefore, they could be directly connected with structures in the solar corona. In order to analyze this problem we selected twenty five MCs detected by WIND instruments that were accompanied by a leading or a following HCS crossing (or both) during the period 1995-2002. The procedure has been the following: Once a HCS crossing was confirmed, we have used analytical models for Magnetic Clouds and HCS local structure in order to establish the relative orientation between the MC axis and the normal vector to the HCS plane. Afterwards, we have compared these results with the Neutral Line inclination obtained from the Surface Source models. The preliminary results suggest a strong distortion of the local inclination of the HCS and a slight relationship between the MC speed and the relative orientation between the MC and the HCS.
DE: 2101 Coronal mass ejections (7513)
DE: 2111 Ejecta, driver gases, and magnetic clouds
DE: 2134 Interplanetary magnetic fields
DE: 2162 Solar cycle variations (7536)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2007 Joint Assembly