Improving a Way of Studying the Distribution of Cosmic Rays on the Basis of Data from the Muon Telescope Network

AbstractWe have deduced the yearly averaged value of the solar diurnal variation as observed by a surface muon telescope and three underground muon telescopes over the years 1957 to 1985. This has allowed us to examine the temporal variation in both the latitudinal gradient Gz and the product of the parallel mean free path and the radial gradient of galactic cosmic rays during three consecutive solar cycles. The median rigidities of the primary particles being detected by the telescopes are 50 GV in the case of the surface muon telescope and greater than 150 GV in the case of the underground muon telescopes. We have compared our results with those of a similar study made from observations of the solar diurnal variation by neutron monitors and an ion chamber, which have median rigidities of response between 17 and 70 GV (Bieber and Chen 1991a). The product has a solar magnetic cycle dependence and our values are lower than those observed by neutron monitors, in agreement with the Bieber and Chen observation that reverses after a solar magnetic field reversal, in accordance with drift theories.

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Cosmic rays muons variations measurements with the muon telescope and the SEVAN detector at BEO - Moussala

10.1063/1.5091202 ◽

2019 ◽

Author(s):

Ivo Angelov ◽

Todor Arsov ◽

Nina Nikolova ◽

Christo Angelov

Keyword(s):

Cosmic Rays ◽

Muon Telescope

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Calibration and performance of the STAR Muon Telescope Detector using cosmic rays

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ◽

10.1016/j.nima.2014.05.075 ◽

2014 ◽

Vol 762 ◽

pp. 1-6 ◽

Cited By ~ 14

Author(s):

C. Yang ◽

X.J. Huang ◽

C.M. Du ◽

B.C. Huang ◽

Z. Ahammed ◽

...

Keyword(s):

Cosmic Rays ◽

Muon Telescope ◽

And Performance

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Antarctic Cosmic Ray Astronomy

Highlights of Astronomy ◽

10.1017/s1539299600017718 ◽

2005 ◽

Vol 13 ◽

pp. 947-948

Author(s):

Marc Duldig

Keyword(s):

Cosmic Rays ◽

Austral Summer ◽

Cosmic Ray ◽

Neutron Monitors ◽

Muon Telescope ◽

International Geophysical Year ◽

International Geophysical ◽

Telescope System ◽

Underground Muon

AbstractCosmic ray observations related to Antarctica commenced in the austral summer of 1947-48 from sub-Antarctic Heard and Macquarie Islands and from the HMAS Wyatt Earp. Muon telescope observations from Mawson station, Antarctica, followed from 1955. The International Geophysical Year was the impetus for the installation of a number of neutron monitors around Antarctica, observing the lowest energy cosmic rays accessible by ground based instruments. In 1971 a new observatory was built at Mawson including the only underground muon telescope system at polar latitudes in either hemisphere. Over more than half a century, cosmic ray astronomy has been undertaken from Antarctica and its surrounding regions and these observations have been critical to our growing understanding of the heliosphere.

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