The Search for <35 MeV neutrons from the June 3, 2012 impulsive flare

K. Koga, S. Masuda, H. Matsumoto, Y. Muraki, T. Obara, O. Okudaira, S. Shibata, T. Yamamoto, T. Goka

Research output: Contribution to journalConference articlepeer-review


We analyzed a highly impulsive solar flare observed on June 3, 2012. In association with this flare, emissions of hard X-rays, high-energy gamma rays, and neutrons were detected by the detectors onboard the FERMI, RHESSI satellites and the International Space Station. We compared those results with the pictures taken by the UV telescope onboard the Solar Dynamics Observatory satellite and found the crossing structure of two magnetic ropes at two positions on the solar surface almost at the same time. Highenergy gamma rays were detected by the Fermi Large Area Telescope satellite, implying that the impulsive flare was one of a major source of proton acceleration processes on the solar surface. At the beginning of research, impulsive solar flares were considered to be the main source of particle acceleration processes; our current observations have confirmed this hypothesis.

Original languageEnglish
Article number100
JournalProceedings of Science
Publication statusPublished - 2015 Jan 1
Externally publishedYes
Event34th International Cosmic Ray Conference, ICRC 2015 - The Hague, Netherlands
Duration: 2015 Jul 302015 Aug 6

ASJC Scopus subject areas

  • General


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