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2022 December 20

AR13141 Flare Events

A large amount of activity observed from the dynamic AR13141. Click on the image for the movie or
click here for the youtube version.

November 2022 Flare Watch on AR13141

AR13141 was the largest and the most evolved active region observed in November 2022. It produced 4 M-class flares listed in the table below and 3 of them occurred in a 24 hour period starting early 11-November. (see GOES/XRS X-ray plot). The above movie shows the XRT observations of this region including these 3 M-class flares.
 Date  Start (UT)  Max (UT) End (UT)  X-Ray Class 
6-NOV-22  23:59 00:11 00:16 M5.2
11-NOV-22  07:00 07:14  07:20  M1.2 
11-NOV-22 11:27  11:40  11:46  M1.2 
12-NOV-22 00:09  00:18  00:24  M1.1 

In this period of frequent flare activity, it can be seen from the magnetic field observation that the leading sunspot with positive polarity (in white) had been dividing as the negative polarity (in black) emerged around the west side of the sunspot. (Notice the difference in the magnetic field image of 11-Nov. compared to that of 9-Nov. in the above image). What we observed in the X-ray is the response of this magnetic re-configuration of the sunspot occurring in the lower layer (photosphere), associated with a number of small-scale magnetic reconnections which we observe as flares.


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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