Ground-Based Cosmic Ray Detectors for Solar-Terrestrial Research and Space Weather Forecasting

Details Ground-Based Cosmic Ray Detectors for Solar-Terrestrial Research and Space Weather Forecasting Ground-Based Cosmic Ray Detectors for Solar-Terrestrial Research and Space Weather Forecasting

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh31b..07b&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH31B-07

Physics

7894 Instruments And Techniques, 2104 Cosmic Rays, 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2114 Energetic Particles, Heliospheric (7514)

Scientific paper

Owing to the large detector mass required to detect high-energy cosmic rays, ground-based instruments remain the state-of-the-art method for studying these elusive particles. Neutron monitors and muon detectors record the byproducts of nuclear interactions of high-energy primary cosmic rays with Earth's atmosphere. At energies up to ˜100 GeV, primary Galactic cosmic rays experience significant modulation in response to the magnetic field of the solar wind. With suitable analysis, ground-based observations yield unique information on the large-scale magnetic structure of passing solar wind disturbances. Cosmic rays also carry precursory signatures of approaching disturbances (such as major CMEs) that are useful for space weather forecasting. We discuss the current status of neutron monitor and muon detector arrays, what can be gained by better coordination of existing arrays, and what might be gained through expansion of the existing network. Supported by NSF grants ATM-0000315 and ATM-0207196.

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