3. The Biggest Sunspots Produced by Cycle 24
Even though Solar Cycle 24 is weak, it has still produced some large sunspots. We list the largest sunspots as observed by HMI and discuss some aspects of the data.
Tag Archives: active region
2. Testing Hemispheric Rule of Helicity with HMI Data
Hemispheric helicity preference in groups of active regions with different properties suggests different origins of magnetic twist.