A truly masive Coronal Mass Ejection (CME) out of AR13102 from September 2022. Click the image for the movie of this event or
Or click here for the youtube version.
Autumnal Equinox and A Unique CME
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The Sun wanted to join in the autumnal festivities on September 23, 2022 with its own celebration in the form of a unique and explosive event. Positioned perfectly on AR13102, XRT observers can see a gorgeous coronal mass ejection (CME) bursting out from the Sun. There is a uniqueness to this particular event in the lack of a preceding solar flare. While the two events (flare and CME) often go hand in hand, a flare can appear without a CME and vice versa. The imagery in the videos shows Hinode's view built from two exposures, or a composite, using the Al-poly filter. The composite allows for observations of the sunspot and the erupting plasma. The subsequent material seen by XRT is then picked up in SOHO's Cor2 coronagraph and difference videos around 14:12 UT. The video from Cor2 is from George Mason University Space Weather Lab. This CME is a possible cause of the Sept 27 geomagnetic storm; an excellent capture for Hinode and SOHO! The KP index is a local, or in this case, planetary index of the severity of a geomagnetic storm. These are the effects of a CME impacting Earth's atmosphere. As the storm impacts, the bars indicate an 'unsettled' magnetosphere at the end of Sept 26 then ramp up to the orange bars on the 27th, and then tapering off. From the side of the graph, the orange bars are a 'minor' geomagnetic storm which is known to disrupt HF radio communications for a time. Keywords: Limb, CME Filters: Al_Poly |
(Prepared by Rhiannon Fleming and Aki Takeda)
The XRT instrument team is comprised of SAO, NASA, JAXA, and NAOJ.
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