Simultaneous Observation of Solar Neutrons from the International Space Station and High Mountain Observatories in Association with a Flare on July 8, 2014

Y. Muraki, D. Lopez, K. Koga, F. Kakimoto, T. Goka, L. X. González, S. Masuda, Y. Matsubara, H. Matsumoto, P. Miranda, O. Okudaira, T. Obara, J. Salinas, T. Sako, S. Shibata, R. Ticona, Y. Tsunesada, J. F. Valdés-Galicia, K. Watanabe, T. Yamamoto

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7 Citations (Scopus)

Abstract

An M6.5-class flare was observed at N12E56 on the solar surface at 16:06 UT on July 8, 2014. In association with the flare, two neutron detectors located at high mountains, Mt. Sierra Negra in Mexico and Mt. Chacaltaya in Bolivia, recorded two neutron pulses, separated approximately by 30 min. Moreover, enhancements were also observed by the solar neutron detector onboard the International Space Station. We analyzed these data combined with solar images from Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory. From these we noticed that the production mechanism of neutrons cannot be explained by a single model; at least one of the enhancements may be explained by an electric field generated by the collision of magnetic loops and the other by the shock acceleration mechanism at the front side of the CME.

Original languageEnglish
Pages (from-to)1241-1265
Number of pages25
JournalSolar Physics
Volume291
Issue number4
DOIs
Publication statusPublished - 2016 Apr 1

Keywords

  • Cosmic rays, solar
  • Energetic particles, neutrons
  • Flares

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Muraki, Y., Lopez, D., Koga, K., Kakimoto, F., Goka, T., González, L. X., Masuda, S., Matsubara, Y., Matsumoto, H., Miranda, P., Okudaira, O., Obara, T., Salinas, J., Sako, T., Shibata, S., Ticona, R., Tsunesada, Y., Valdés-Galicia, J. F., Watanabe, K., & Yamamoto, T. (2016). Simultaneous Observation of Solar Neutrons from the International Space Station and High Mountain Observatories in Association with a Flare on July 8, 2014. Solar Physics, 291(4), 1241-1265. https://doi.org/10.1007/s11207-016-0887-0