Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2010-08-10
Astropart.Phys.34:457-466,2011
Physics
High Energy Physics
High Energy Physics - Experiment
Submitted to AstroParticle Physics
Scientific paper
10.1016/j.astropartphys.2010.10.
The shadowing of cosmic ray primaries by the the moon and sun was observed by the MINOS far detector at a depth of \unit[2070]{mwe} using 83.54 million cosmic ray muons accumulated over 1857.91 live-days. The shadow of the moon was detected at the \unit[5.6]{$\sigma$} level and the shadow of the sun at the \unit[3.8]{$\sigma$} level using a log-likelihood search in celestial coordinates. The moon shadow was used to quantify the absolute astrophysical pointing of the detector to be 0.17\pm 0.12^\circ. Hints of Interplanetary Magnetic Field effects were observed in both the sun and moon shadow.
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