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Deciphering Solar Magnetic Activity: Spotting Solar Cycle 25
2017
Frontiers in Astronomy and Space Sciences
We present observational signatures of solar cycle 25 onset. Those signatures are visibly following a migratory path from high to low latitudes. They had starting points that are asymmetrically offset in each hemisphere at times that are 21-22 years after the corresponding, same polarity, activity bands of solar cycle 23 started their migration. Those bands define the so-called "extended solar cycle." The four magnetic bands currently present in the system are approaching a mutually cancelling
doi:10.3389/fspas.2017.00004
fatcat:i32qfclcnvedtdx4va5clh25dq