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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/17191
Title: Largest GLE in half a century: Neutron monitor observations of the January 20, 2005 event
Authors: John W. Bieber
John Clem
Paul Evenson
Roger Pyle
Marc Duldig
John Humble
David Ruffolo
Manit Rujiwarodom
Alejandro Sáiz
Bartol Research Institute
Australian Antarctic Division
University of Tasmania
Mahidol University
Chulalongkorn University
Keywords: Physics and Astronomy
Issue Date: 1-Jan-2005
Citation: 29th International Cosmic Ray Conference, ICRC 2005. Vol.1, (2005), 237-240
Abstract: Within a 6-minute span on January 20, 2005, the count rate registered by a neutron monitor at the sea level station of McMurdo, Antarctica increased by a factor of 30, while the rate at the high-altitude (2820 m) site of South Pole increased by a factor of 56. The size of the increase at McMurdo qualifies it as the largest observed at sea level since the famous 1956 event, while the increase at South Pole may have been the largest (in percentage terms) ever registered by a neutron monitor. This paper uses data from the "Spaceship Earth" network of neutron monitors to characterize the time evolution of cosmic rays during the event. We also investigate spectral evolution using multiplicity data from a specially instrumented mobile monitor that was located in McMurdo Sound at the time of the event.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84899017576&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/17191
Appears in Collections:Scopus 2001-2005

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