The Strange Magnetization of Sunspot AR2887

Oct. 24, 2021: Something does not add up. New sunspot AR2887 has two primary cores, each about the size of Earth. Usually when a sunspot looks like this, the two cores have opposite magnetic polarities, positive (+) and negative (-). In this case, however, they’re the same.

Pictured above is a magnetic map of AR2887 from NASA’s Solar Dynamics Observatory. It shows the primary poles of double sunspot AR2887 are both negative (-). Surrounding patches of positive (+) magnetic flux provide balance.

Perhaps AR2887 is not one but actually two sunspots jammed together in close proximity. We’ll get a better view of its magnetic architecture as AR2887 turns toward Earth in the days ahead. Stay tuned. Solar flare alerts: SMS Text.

more images: from Cai-Uso Wohler of Bispingen, Lueneburg Heath, Germany; from Francois Rouviere of Cannes, France; from Richard Jaworski of Carlingford, NSW, Australia; from Maximilian Teodorescu of Magurele, Romania;

2 thoughts on “The Strange Magnetization of Sunspot AR2887

  1. Dr. Phillips – any idea what that might indicate in terms of strength of any possible activity that arise from it? Has this ever happened before? And thank you for providing your updates and insights, greatly appreciated! I really enjoyed your post recently about the magnetic storm of 2001, brought back some great memories of seeing auroras in Phoenix, AZ.


  2. Well, this one definitely turned out to be active – let loose with an X1 flare and earth-directed CME today. Appears pretty impressive too. I wonder if that strange polarity issue had anything to do with it at all?


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