Solar Physics

, Volume 284, Issue 1, pp 5–15 | Cite as

Post-Eruption Arcades and Interplanetary Coronal Mass Ejections

  • S. YashiroEmail author
  • N. Gopalswamy
  • P. Mäkelä
  • S. Akiyama
Flux-Rope Structure of Coronal Mass Ejections


We compare the temporal and spatial properties of posteruption arcades (PEAs) associated with coronal mass ejections (CMEs) at the Sun that end up as magnetic cloud (MC) and non-MC events in the solar wind. We investigate the length, width, area, tilt angle, and formation time of the PEAs associated with 22 MC and 29 non-MC events and we find no difference between the two populations. According to current ideas on the relation between flares and CMEs, the PEA is formed together with the CME flux-rope structure by magnetic reconnection. Our results indicate that at the Sun flux ropes form during CMEs in association with both MC and non-MC events; however, for non-MC events the flux-rope structure is not observed in the interplanetary space because of the geometry of the observation, i.e. the location of the spacecraft when the structure passes through it.


Flares Coronal mass ejections Posteruption arcades Flux rope Magnetic cloud 



We would like to thank the local organizers of the LWS CDAW meetings in San Diego, USA, and Alcalá de Henares, Spain. This research was supported by NASA grants NNX10AL50A and NNG11PL10A. SOHO is an international cooperation project between ESA and NASA.


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • S. Yashiro
    • 1
    • 2
    Email author
  • N. Gopalswamy
    • 2
  • P. Mäkelä
    • 1
    • 2
  • S. Akiyama
    • 1
    • 2
  1. 1.The Catholic University of AmericaWashingtonUSA
  2. 2.NASA Goddard Space Flight CenterGreenbeltUSA

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