Bulletin of the Korean Space Science Society (한국우주과학회:학술대회논문집(한국우주과학회보))

The Korean Space Science Society (한국우주과학회)
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Neutron Monitor as a New Instrument for KSWPC

  • Oh, Su-Yeon (Department Astronomy and Space Science, Chungnam National University) ;
  • Yi, Yu (Department Astronomy and Space Science, Chungnam National University) ;
  • Kim, Yong-Kyun (Department of Nuclear Engineering, Hanyang University) ;
  • Bieber, John W (Bartol Research Institute, Department of Physics and Astronomy, University of Delaware) ;
  • Cho, Kyung-Seok (Solar and Space Weather Research Group, Korea Astronomy and Space Science Institute)
  • Published : 2008.10.22
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Abstract

Cosmic ray (CR)s are energetic particles that are found in space and filter through our atmosphere. They are classified with galactic cosmic ray (GCR)s and solar cosmic ray (SCR)s from their origins. The process of a CR particle colliding with particles in our atmosphere and disintegrating into smaller pions, muons, neutrons, and the like, is called a cosmic ray shower. These particles can be measured on the Earth's surface by neutron monitor (NM)s. Regarding with the space weather, there are common types of short term variation called a Forbush decrease (FD) and a Ground Level Enhancement (GLE). In this talk, we will briefly introduce our recent studies on CRs observed by NM: (1) simultaneity of FD depending on solar wind interaction, (2) an association between GLE and solar proton events, and (3) diurnal variation of the GCR depending on geomagnetic cutoff rigidity. NM will provide a crucial information for the Korea Space Weather Prediction Center (KSWPC).

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