XRT observing a flare from AR13297. Click the above image to watch the movie of this event
or click here for the youtube version.
An Unrecorded Flare from AR13297
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This is a quick report of XRT's unusual observation of flares. When a flare is detected, XRT runs special observing sequence to take images faster than usual with the filters appropriate for flares. Such flare mode observations usually last for a few minutes to catch a single flare event. However, the flare observations performed on 11 May 2023 were unique. The flare mode was triggered at 18:22:27 in response to an eruptive flare from AR13297, and in the midst of this event (at 18:26:03), the observing region was switched to AR13294 located at 20 heliocentric degree south across the equator, responding to the strong flare from this region. The observation of AR13294 continued until the end of flare mode at 18:35:27. The flare event summary and the solarsoft flare archive at Lockheed both recorded only the latter flare from AR13294 and there was no mention of a flare from AR13297. The report of the flare from AR13294 is below:
Despite these published records, XRT certainly witnessed the strong northeastward ejection from AR13297, started nearly 4 minutes earlier than the flare from AR13294. So we would like to write it down here to keep an accurate record. Keywords: AR Tracking, Flare Filters: Al-poly |
(Prepared by Aki Takeda)
The XRT instrument team is comprised of SAO, NASA, JAXA, and NAOJ.
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