CME-geometry and cosmic-ray anisotropy observed by a prototype muon detector network

2005 ◽  
Vol 36 (12) ◽  
pp. 2357-2362 ◽  
Author(s):  
K. Munakata ◽  
T. Kuwabara ◽  
J.W. Bieber ◽  
P. Evenson ◽  
R. Pyle ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Muon Detector

scholarly journals A Cosmic Ray Muon Detector for Astronomy Teaching

2000 ◽  
Vol 17 (2) ◽  
pp. 171-175 ◽  
Author(s):  
R. W. Clay ◽  
Z. Kurban ◽  
A. H. Maghrabi ◽  
N. R. Wild
Keyword(s):  
Solar Wind ◽  
Cosmic Ray ◽  
Teaching Tool ◽  
The Sun ◽  
Muon Detector ◽  
Radio Telescopes ◽  
Constant Change ◽  
Radio Studies ◽  
Optical Telescopes ◽  
Similar Cost

AbstractPractical astronomy is usually taught using optical telescopes or, more rarely, radio telescopes. For a similar cost, complementary studies may be made of astrophysical particles through the use of a modestly sized muon detector. Such a detector records the arrival of cosmic ray particles that have traversed the heliosphere and the rate of muon detections reflects the flux of those particles. That flux is controlled by the day to day properties of the heliosphere which is in a state of constant change as the outflowing solar wind is affected by solar activity. As a consequence, a laboratory muon detector, whose count rate depends on the state of the heliosphere, can be an interesting and useful teaching tool that is complementary to optical or radio studies of the Sun.

Effects of ICMEs on High Energetic Particles as Observed by the Global Muon Detector Network (GMDN)

2017 ◽  
Vol 13 (S335) ◽  
pp. 69-74
Author(s):  
A. Dal Lago ◽  
C. R. Braga ◽  
R. R. S. de Mendonca ◽  
M. Rockenbach ◽  
E. Echer ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Cosmic Rays ◽  
Space Weather ◽  
Geomagnetic Storms ◽  
Cosmic Ray ◽  
Galactic Cosmic Rays ◽  
Lead Times ◽  
Muon Detector ◽  
Crucial Importance ◽  
The Earth

AbstractThe 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.

The KACST muon detector and its application to cosmic-ray variations studies

2012 ◽  
Vol 50 (6) ◽  
pp. 700-711 ◽  
Author(s):  
A.H. Maghrabi ◽  
H. Al Harbi ◽  
Z.A. Al-Mostafa ◽  
M.N. Kordi ◽  
S.M. Al-Shehri
Keyword(s):  
Cosmic Ray ◽  
Muon Detector

scholarly journals Influence of the Atmospheric Mass on the High Energy Cosmic Ray Muons during a Solar Cycle

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
A. H. Maghrabi ◽  
R. N. Alotaibi ◽  
M. M. Almutayri ◽  
M. S. Garawi
Keyword(s):  
Atmospheric Pressure ◽  
Cosmic Ray ◽  
High Energy ◽  
Muon Detector ◽  
Annual Variations ◽  
Using Data ◽  
Two Parameters ◽  
Atmospheric Mass ◽  
Interannual Scale ◽  
Barometric Coefficient

The rate of the detected cosmic ray muons depends on the atmospheric mass, height of pion production level, and temperature. Corrections for the changes in these parameters are importance to know the properties of the primary cosmic rays. In this paper, the effect of atmospheric mass, represented here by the atmospheric pressure, on the cosmic ray was studied using data from the KACST muon detector during the 2002–2012 period. The analysis was conducted by calculating the barometric coefficient (α) using regression analysis between the two parameters. The variation ofαover different time scales was investigated. The results revealed a seasonal cycle ofαwith a maximum in September and a minimum in March. Data from Adelaide muon detector were used, and different monthly variation was found. The barometric coefficient displays considerable variability at the interannual scale. Study of the annual variations ofαindicated cyclic variation with maximums between 2008 and 2009 and minimums between 2002 and 2003. This variable tendency is found to be anticorrelated with the solar activity, represented by the sunspot number. This finding was compared with the annual trend ofαfor the Adelaide muon detector for the same period of time, and a similar trend was found.

scholarly journals Deriving the solar activity cycle modulation on cosmic ray intensity observed by Nagoya muon detector from October 1970 until December 2012

2016 ◽  
Vol 12 (S328) ◽  
pp. 130-133 ◽  
Author(s):  
Rafael R. S. de Mendonça ◽  
Carlos. R. Braga ◽  
Ezequiel Echer ◽  
Alisson Dal Lago ◽  
Marlos Rockenbach ◽  
...  
Keyword(s):  
Solar Activity ◽  
Cosmic Ray ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Atmospheric Temperature ◽  
Muon Detector ◽  
Natural Phenomena ◽  
Cosmic Ray Intensity ◽  
Temperature Changes ◽  
Muon Intensity

AbstractIt is well known that the cosmic ray intensity observed at the Earth's surface presents an 11 and 22-yr variations associated with the solar activity cycle. However, the observation and analysis of this modulation through ground muon detectors datahave been difficult due to the temperature effect. Furthermore, instrumental changes or temporary problems may difficult the analysis of these variations. In this work, we analyze the cosmic ray intensity observed since October 1970 until December 2012 by the Nagoya muon detector. We show the results obtained after analyzing all discontinuities and gaps present in this data and removing changes not related to natural phenomena. We also show the results found using the mass weighted method for eliminate the influence of atmospheric temperature changes on muon intensity observed at ground. As a preliminary result of our analyses, we show the solar cycle modulation in the muon intensity observed for more than 40 years.

scholarly journals Cosmic-Ray Short Burst Observed with the Global Muon Detector Network (GMDN) on 2015 June 22

2018 ◽  
Vol 862 (2) ◽  
pp. 170 ◽  
Author(s):  
K. Munakata ◽  
M. Kozai ◽  
P. Evenson ◽  
T. Kuwabara ◽  
C. Kato ◽  
...  
Keyword(s):  
Cosmic Ray ◽  
Muon Detector ◽  
Short Burst

Cosmic ray measurement and experimental temperature analysis with a muon detector

2012 ◽  
Vol 61 (4) ◽  
pp. 647-652 ◽  
Author(s):  
Yun Ho Kim ◽  
Jeongsoo Kang ◽  
Doh-Yun Jang ◽  
Jae Bum Son ◽  
Yong-Kyun Kim
Keyword(s):  
Cosmic Ray ◽  
Experimental Temperature ◽  
Muon Detector ◽  
Temperature Analysis
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