Appendices A and B are only available in electronic form at http://www.edpsciences.org

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When Eq. (1) will be used to fit the data, i.e., to describe the statistical relationship between the measured mean-accelerations and velocities we will call it the a-v correlation or quadratic a-v fit; when used to describe the instantaneous drag acceleration we will call it the a(v)-curve or a(v)-trajectory.

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... force

Ruzdjak et al. (2004) offered also an alternative explanation, where the CME-wind coupling is governed by the fast solar wind. Yet, most of CMEs are launched in the streamer belt, and their mean width is relatively small (see Appendix A), so such an ad hoc interpretation in fact does not provide a satisfying explanation.

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