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3. Solar flares and sunspot regions on the east limb, and unnumbered regions are discussed in this topic. 4. Returning active region? Make a new topic with the current sunspot region number. Do not revive the old topic for that sunspot region! 5. Want to talk about coronal holes? There is a dedicated topic for that.
Jul 18, 2020 · A solar flare occurs when magnetic energy that has built up in the solar atmosphere is suddenly released. Material is heated to many millions of degrees in just minutes and radiation is emitted across virtually the entire electromagnetic spectrum, from radio waves at the long wavelength end, through optical emission to X-rays and gamma rays at ...
Jan 19, 2023 · Double solar flare January 18, 2023. This January 18, 2023 magnificent big spot with a double ejection that we see rising like a huge lasso, the luminous point in the spot and one of the ejection zones. 150 mm Halpha refractor in Coronado PST standard double stack and Apollo imx 429 camera.
Jun 15, 2024 · If the largest solar flare per solar cycle is affected by the size of the solar cycle, then because of the size of SC19, the 23 February 1956 flare is the largest solar flare ever recorded, at X100, if the flare occurred on the centre of the disk. Edited June 16 by faster328
Jun 16, 2024 · Posted June 16. On 6/16/2024 at 4:38 AM, Vancanneyt Sander said: Saturation level of the GOES-13 to current satellite is X24,86 (with correction factor X17,4ish). GOES -7 (1987-1996) saturated above X11,6 (with correction factor!). Between GOES -7 and 13, no flares reached saturation level. Any flare above saturation level is estimated.
Jun 1, 2024 · Going on swl's ' Top 50 solar flares ' page and checking on sc24, I can see at least 50 X flares, the 50th largest one being X1.42. So it is definitely not 49. To my mind, it is impossible that the next largest one in an 11 year period (the 51st largest one) was smaller than X. There must have been at least a few flares between X1 and X1.42.
Feb 26, 2024 · Solar orbiter is also closer to the sun, which results in a higher flux. At 0.71 AU distance it is almost twice the flux compared to 1 AU. An X6.3 flare at 1 AU corresponds to a X12.5 flare at 0.71 AU. The count does not seem to be linear with the energy, as far as I understand, so it can't be used for comparison.
Dec 11, 2020 · NOAA swpc geomagnetic storm maximum Kp index predicted value of the Dec 10, 2020 CME shockwave arrival of the Dec 7, 2020 earth-facing C7.4 solar flare overestimated the actual value substantially. Arrival time was predicted accurately, but the intensity was not. Predicted maximum was G3=Kp7 (SEVERE). Actual maximum was Kp4 (ACTIVE).
Sep 4, 2024 · There were high solar activity on late December 2023 to early January 2024, late February 2024, late March 2024, mid-May 2024, late July to early August 2024, and now we are seeing a rise in sunspot complexity again with recent ARs 13806, 13807 and 13813 growing a gamma magnetic configuration and developed deltas. Image: AR 13664 on 10 May 2024.
May 16, 2024 · Gallery. The Sun. Sun refractor 185 mm Halpha. A magnificent solar flare this May 13, 2024 with my 185mm apo Askar scope with Fabry Perot PST Coronado optimized Halpha Barlow 2.5 x and Camera player one.
