Drax Spacex Posted August 25, 2022 Share Posted August 25, 2022 (edited) AR3086 is curiously close to, if not almost completely enveloped by, a coronal hole. Could this affect the AR's development in terms of size, number of sunspots, or magnetic configuration? https://i.ibb.co/vZTvn99/AR3086in-CH.jpg Edited August 25, 2022 by Drax Spacex link image Link to comment Share on other sites More sharing options...
Newbie Posted August 25, 2022 Share Posted August 25, 2022 12 minutes ago, Drax Spacex said: AR3086 is curiously close to, if not almost completely enveloped by, a coronal hole. Could this affect the AR's development in terms of size, number of sunspots, or magnetic configuration? https://i.ibb.co/vZTvn99/AR3086in-CH.jpg Drax Spacex: I noticed it also. The sunspot appears as an island inside the coronal hole doesn't it? A coronal hole is a temporary region of relatively cool, less dense plasma in the solar corona where the Sun's magnetic field extends into interplanetary space as open magnetic field lines carried away by the solar wind in a spiral formation. Magnetic fields in a sunspot of an active region loop back on themselves. All solar activity is driven by the underlying solar magnetic field. As sunspots tend to suppress high-speed solar winds and some of the highest speed winds flow out from coronal holes, then sunspots would IMO act as a damper on the solar wind emanating from the CH. I haven't read anything about CH's impacting Sunspot development, but I haven't read everything! N. 2 1 Link to comment Share on other sites More sharing options...
farm24 Posted August 26, 2022 Share Posted August 26, 2022 an Anemone Region! 1 Link to comment Share on other sites More sharing options...
Sunshine Posted August 27, 2022 Share Posted August 27, 2022 5 hours ago, farm24 said: an Anemone Region! Is that an official designation? Link to comment Share on other sites More sharing options...
Solarflaretracker200 Posted August 27, 2022 Share Posted August 27, 2022 5 hours ago, farm24 said: an Anemone Region! A What Link to comment Share on other sites More sharing options...
Drax Spacex Posted August 28, 2022 Author Share Posted August 28, 2022 (edited) The magnetic field lines of an AR within a CH looks like a sea anemone or an anemone flower. There is at least one paper that uses the decriptive moniker "anemone" for an active region within a coronal hole: "Source-region characteristics of anemone active regions in the ascending phase of solar cycle 24 - Astronomy & Astrophysics". AR3086 development perhaps has remained stable with only beta magnetic configuration as a consequence of being fully contained within the CH, in contrast to the unstable regions AR3089 and AR3088 on either side of it. Edited August 28, 2022 by Drax Spacex Link to comment Share on other sites More sharing options...
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