The Solar Eruption of 2017 September 10: Wavy with a Chance of Protons

Details

• Journal Title:
  The Astrophysical Journal
• Personal Author:
  de Koning, Curt A. ; Pizzo, V. J. ; Seaton, Daniel B.
• NOAA Program & Office:
  NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; NWS (National Weather Service) ; SWPC (Space Weather Prediction Center)
• Description:
  High-resolution SUVI images reveal an interesting new picture of particle acceleration in powerful solar eruptions. Typically, powerful solar eruptions include a coronal wave component, as well the traditional CME and flare components. At low solar altitudes, coronal waves refract downward, toward the solar surface, because of the slower Alfvén speeds at the base of the corona. The refracted wave plus the shock wave ahead of an intense CME allow for a two-step shock acceleration process that can result in relativistic or GLE particles. This mechanism may be particularly applicable to the first-to-arrive, prompt relativistic particles measured by the Fort Smith neutron monitor during GLE # 72 on 2017 September 10.
• Keywords:
  Solar Atmosphere Sun Solar Atmosphere Astronomy And Astrophysics Solar Coronal Waves Solar Particle Emission Solar Storm Space And Planetary Science
• Source:
  The Astrophysical Journal, 924(2), 106
• DOI:
  https://doi.org/10.3847/1538-4357/ac374d
• Format:
  PDF
• Document Type:
  Journal Article
• Funding:
  NA17OAR4320101
• License:
  https://creativecommons.org/licenses/by/4.0/
• Rights Information:
  CC BY
• Compliance:
  Submitted
• Main Document Checksum:
  urn:sha256:254e527c165fab2a353ca74c3b7725693d0a6cc69d23856d02a7cdb6ea9f9d30
• Download URL:
  https://repository.library.noaa.gov/view/noaa/48753/noaa_48753_DS1.pdf
• File Type:
  [PDF - 1.48 MB ]