Cutoff Rigidity Calculator

For a given lat/lon, this utility calculates the cutoff rigidity (GV) of incoming primary cosmic rays

Site Latitude: (-90° → 90°)

Site Longitude: (-180° → 180°)

IGRF Year:

Note: Calculations use algorithms from Smart and Shea (2001) and data from the International Geomagnetic Reference Frame and will take a while. Please be patient.

COSMOS is supported by the Atmospheric and Geospace Sciences Division of the National Science Foundation