Affiliation
American Association of Variable Star Observers (AAVSO)
Wed, 06/05/2024 - 16:05

I have a doubt about the active regions AR3701 and AR3703: one group (class F Zurich) or two separate ones (class D)? With Helio Viewer they are 10° apart from each other, while if taken as a single group they have an extension of 21°. The latitude is practically the same, with 3701 slightly lower (Joy's law?).

Maurizio

Affiliation
American Association of Variable Star Observers (AAVSO)
Bipolar groups

Hi Maurizio -

 

I have watched these groups evolve (separately) and it appears to me that they are indeed 2 separate bipolar groups. It is useful when you get a lot of sunny days and you can watch them evolve. 

 

KL