Moon and Sun shadowing effect in the MACRO detector

Abstract

Using data collected by the MACRO experiment from 1989 to the end of its operations in 2000, we have studied in the underground muon flux the shadowing effects due to both the Moon and the Sun. We have observed the Moon shadowing effect with a significance of 6.5 sigma and the Sun shadowing effect with a significance of 4.3 sigma. The observed displacement of the Sun shadow, due to the configurations of the solar and interplanetary magnetic fields, has been used to quote the antiproton/proton flux limits for primaries of about 20 TeV energy.

23 pages, 11 figures, submitted to Astrop.Phys

References in corpus (3)

• Neutrino astronomy with the MACRO detector
• A study of the shadowing of galactic cosmic rays by the sun in a quiet phase of solar activity with the Tibet air shower array
• The Observation of a Shadow of the Moon in the Underground muon flux in the Soudan 2 detector

Cited by in corpus (18)

• Observation of the Cosmic Ray Moon shadowing effect with ARGO-YBJ
• Observation of the cosmic-ray shadow of the Moon with IceCube
• Oscillations of solar atmosphere neutrinos
• Measurement of the cosmic ray antiproton/proton flux ratio at TeV energies with the ARGO-YBJ detector
• A cosmic-ray database update: CRDB v4.1
• Moon Shadow by Cosmic Rays under the Influence of Geomagnetic Field and Search for Antiprotons at Multi-TeV Energies
• Chemical Composition of Galactic Cosmic Rays with Space Experiments
• Observation in the MINOS far detector of the shadowing of cosmic rays by the sun and moon
• First observation of the cosmic ray shadow of the Moon and the Sun with KM3NeT/ORCA
• Observation of the cosmic ray shadow of the Sun with the ANTARES neutrino telescope
• Detection of the Temporal Variation of the Sun's Cosmic Ray Shadow with the IceCube Detector
• Sensitivity and pointing accuracy of the NEMO km${}^3$ telescope
• Detection potential to point-like neutrino sources with the NEMO-km3 telescope
• Time correlations of high energy muons in an underground detector
• Time variations in the deep underground muon flux
• The influence of the Sun and Moon on the observation of very high energy gamma-ray sources using EAS arrays
• Recent Results from the ANTARES Neutrino Telescope
• MINOS Observations of Shadowing in the Muon Flux Underground