Muon Flux Data from Toledo, Ohio During the Partial Solar Eclipse on August 21, 2017

Showing a possible correlation of the muon flux data with partial solar eclipse event data


James A. Petrait


Click on the graph for a larger version


In Toledo, Ohio, two RM-60 geiger counters were placed in an horizontal position, connected to a coincidence detector, and the data was recorded with a LCD -90 Pro Micro-Controller Data- Logger for a 25 hour and 24 minutes time period from  2023 EDT on 082017 to 2147 EDT on 082117. (The equipment names and models refer to the products from the Aware Electronics Company.)

Using a computer, a graph was made of the data showing the muon flux level vs time. The muon flux counts were grouped into 120 minute periods on this graph.  A regression analysis was also performed which is shown by the slopping line on the graph.

The timing of the partial solar eclipse for Toledo, Ohio was indicated to be starting a 1302 EDT with a maximum at 1427 EDT and ending at 1548 EDT.

The lowest muon flux level was calculated to be around 1500 EDT on the graph.  There was around a 30 minute lag between the time of the maximum parial solar eclipse and the lowest muon flux level.

There could be a correlation between between the muon flux data and the partial solar eclipse event data.  Many factors could cause a variation in the muon flux data.  The muon flux can be altered directly by the radiation coming from the Sun or from other cosmic sources and indirectly from the changes in the magnetic field of the Earth and atmospheric conditions.  The muon flux does undergo normal variations and it is possible that this is a chance event which needs to be clarified with more data during future solar eclipses.



Go to the index of Variations in the Muon Flux Background Intensity Research

Go to Monitoring Muons on the Surface of the Earth for information on muon measurements using a coincidence detector.

Go to the Aware Electronic posting of this article at