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Effects of ICMEs on high energetic particles as observed by the Global Muon Detector Network (GMDN)

Citation

Dal Lago, A and Braga, CR and de Mendonca, RRS and Rockenbach, M and Echer, E and Schuch, NJ and Munakata, K and Kato, C and Kuwabara, T and Kozai, M and Al Jassar, HK and Sharma, MM and Tokumaru, M and Duldig, M and Humble, J and Evenson, P and Sabbah, I, Effects of ICMEs on high energetic particles as observed by the Global Muon Detector Network (GMDN), Space Weather of the Heliosphere: Processes and Forecasts Proceedings IAU Symposium, 17-21 July, United Kingdom, pp. 69-74. (2018) [Non Refereed Conference Paper]


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DOI: doi:10.1017/S1743921318000066

Abstract

The Global Muon Detector Network (GMDN) is composed by four ground cosmic ray detectors distributed around the Earth: Nagoya (Japan), Hobart (Australia), Sao Martinho da Serra (Brazil) and Kuwait city (Kuwait). The network has operated since March 2006. It has been upgraded a few times, increasing its detection area. Each detector is sensitive to muons produced by the interactions of ∼50 GeV Galactic Cosmic Rays (GCR) with the Earth's atmosphere. At these energies, GCR are known to be affected by interplanetary disturbances in the vicinity of the earth. Of special interest are the interplanetary counterparts of coronal mass ejections (ICMEs) and their driven shocks because they are known to be the main origins of geomagnetic storms. It has been observed that these ICMEs produce changes in the cosmic ray gradient, which can be measured by GMDN observations. In terms of applications for space weather, some attempts have been made to use GMDN for forecasting ICME arrival at the earth with lead times of the order of few hours. Scientific space weather studies benefit the most from the GMDN network. As an example, studies have been able to determine ICME orientation at the earth using cosmic ray gradient. Such determinations are of crucial importance for southward interplanetary magnetic field estimates, as well as ICME rotation.

Item Details

Item Type:Non Refereed Conference Paper
Keywords:interplanetary medium, cosmic rays, coronal mass ejections (CMEs)
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:High Energy Astrophysics; Cosmic Rays
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
UTAS Author:Duldig, M (Dr Marc Duldig)
UTAS Author:Humble, J (Dr John Humble)
ID Code:127477
Year Published:2018
Deposited By:Mathematics and Physics
Deposited On:2018-07-31
Last Modified:2018-07-31
Downloads:0

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