Cosmic ray sun shadow in Soudan 2 underground muon flux.
Conference
·
OSTI ID:11873
The absorption of cosmic rays by the sun produces a shadow at the earth. The angular offset and broadening of the shadow are determined by the magnitude and structure of the interplanetary magnetic field (IPMF) in the inner solar system. The authors report the first measurement of the solar cosmic ray shadow by detection of deep underground muon flux in observations made during the entire ten-year interval 1989 to 1998. The sun shadow varies significantly during this time, with a 3.3{sigma} shadow observed during the years 1995 to 1998.
- Research Organization:
- Argonne National Lab., IL (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 11873
- Report Number(s):
- ANL-HEP-CP-99-60; TRN: AH200118%%305
- Resource Relation:
- Conference: 26th International Cosmic Ray Conference, Salt Lake City, UT (US), 08/17/1999--08/25/1999; Other Information: PBD: 23 Jun 1999
- Country of Publication:
- United States
- Language:
- English
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