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1 results

  • Coronal Mass Ejections travel time

  • Carlos Roberto Braga, Rafael Rodrigues Souza de Mendonça, Alisson Dal Lago, Ezequiel Echer
  • Journal:
    Proceedings of the International Astronomical Union / Volume 12 / Issue S328 / October 2016
    Published online by Cambridge University Press:
    12 September 2017, pp. 218-220
    Print publication:
    October 2016
    • Article
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  • Coronal mass ejections (CMEs) are the main source of intense geomagnetic storms when they are earthward directed. Studying their travel time is a key-point to understand when the disturbance will be observed at Earth. In this work, we study the CME that originated the interplanetary disturbance observed on 2013/10/02. According to the observations, the CME that caused the interplanetary disturbance was ejected on 2013/09/29. We obtained the CME speed and estimate of the time of arrival at the Lagrangian Point L1 using the concept of expansion speed. We found that observed and estimated times of arrival of the shock differ between 2 and 23 hours depending on method used to estimate the radial speed.