On the increase of solar activity in the Southern Hemisphere during solar cycle 21

The north-south asymmetry for major flares (solar cycle 19 and 20), type II radio bursts (solar cycles 19, 20, and 21), white light flares (solar cycles 19, 20, and 21), and gamma ray bursts, Hard X-ray bursts, and coronal mass ejections (solar cycle 21) is investigated. Results indicate that the asymmetry occurs in the Northern Hemisphere during cycles 19 and 20, and that it favors the Southern Hemisphere during cycle 21. It is suggested that the change in asymmetry from the Northern to the Southern Hemisphere may be related to the sun's interior.