Published June 10, 2013 | Version Published
Journal Article Open

The Very Unusual Interplanetary Coronal Mass Ejection of 2012 July 23: A Blast Wave Mediated by Solar Energetic Particles

  • 1. ROR icon University of California, Los Angeles
  • 2. ROR icon California Institute of Technology
  • 3. ROR icon University of California, Berkeley
  • 4. ROR icon Johns Hopkins University Applied Physics Laboratory
  • 5. ROR icon Goddard Space Flight Center
  • 6. ROR icon University of Alcalá
  • 7. ROR icon Kiel University
  • 8. ROR icon University of New Hampshire

Abstract

The giant, superfast, interplanetary coronal mass ejection, detected by STEREO A on 2012 July 23, well away from Earth, appears to have reached 1 AU with an unusual set of leading bow waves resembling in some ways a subsonic interaction, possibly due to the high pressures present in the very energetic particles produced in this event. Eventually, a front of record high-speed flow reached STEREO. The unusual behavior of this event is illustrated using the magnetic field, plasma, and energetic ion observations obtained by STEREO. Had the Earth been at the location of STEREO, the large southward-oriented magnetic field component in the event, combined with its high speed, would have produced a record storm.

Additional Information

© 2013 American Astronomical Society. Received 2013 February 22; accepted 2013 April 18; published 2013 May 22. This work was supported by the National Aeronautics and Space Administration under NASA Grant NAS5-00133, administered by the University of California, Berkeley.

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Additional details

Identifiers

Eprint ID
39540
Resolver ID
CaltechAUTHORS:20130723-144023646

Funding

NASA
NAS5-00133

Dates

Created
2013-07-23
Created from EPrint's datestamp field
Updated
2021-11-09
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Space Radiation Laboratory
Other Numbering System Name
Space Radiation Laboratory
Other Numbering System Identifier
2013-18