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On the shape and motion of the Earth's bow shock

Meziane, K.; Hamza, A. M.; Alrefay, T. Y.

Multipoint-measurements by the magnetic field Cluster-FGM (Flux Gate Magnetometer) are used to determine the local shock normal, and in turn allow the study of shock location shape and the velocity of the Earth's bow shock. The shock crossings cover orbits in which the spacecraft separation is of the order of ~600 km or less. A data selection of 1…

The occurrence of upstream waves in relation with the solar wind parameters: A statistical approach to estimate the size of the foreshock region

Regi, M.; De Lauretis, M.; Francia, P.

We studied the occurrence of upstream waves in the foreshock region and their relationship with the solar wind and interplanetary magnetic field parameters. To this purpose, we developed a method for a careful identification of the upstream wave events. The results of the statistical analyses based on Cluster data (2003-2010 years) confirm that th…

Radial distribution of magnetic field in earth magnetotail current sheet

Petrukovich, A. A.; Dunlop, M. W.; Baumjohann, W. +4 more

Knowing the magnetic field distribution in the magnetotail current sheet (CS) is essential for exploring magnetotail dynamics. In this study, using a joint dataset of Cluster/TC-1, the radial profile of the magnetic field in the magnetotail CS with radial distances covering 8<r<20R_E under different geomagnetic activity states (i.e…

Turbulent dynamics inside the cavity of hot flow anomaly

Dandouras, I.; Facskó, G.; Kovács, P.

In this paper the turbulent dynamics of a hot flow anomaly (HFA) event is investigated. The HFAs are transient plasma disturbances generated by the interaction of the bow shock (BS) and a tangential discontinuity (TD) embedded in the solar wind. The typical changes of the plasma parameters inside HFAs (increased plasma temperature, low bulk veloci…

The far magnetotail response to an interplanetary shock arrival

Němeček, Z.; Šafránková, J.; Přech, L. +2 more

We present a study of the impact of the December 7, 2003 fast forward interplanetary (IP) shock on the distant tail of the Earth's magnetosphere. Using the data from the several spacecraft located in the solar wind/magnetosheath upstream to the Earth, we monitor a propagation of the IP shock from the L1 point to the magnetosphere. A behavior of th…