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physical phenomena > event > celestial event > periodic celestial event > Forbush decrease
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Forbush decrease comparison table
Subject has discoverer has discovery date has definition occurs on is a kind of is an instance of has period
periodic celestial event  Celestial event which occurs with a very regular period celestial event  
solar event   Suncelestial event  
Forbush decreaseForbush1954A decrease in cosmic-ray intensity during active Sun.Sun solar event11 years

Next periodic celestial event: location dependent periodic celestial event    Up: periodic celestial event, solar event    Previous periodic celestial event: equinox