flare: motion of h-alpha kernels and coronal sources
DESCRIPTION
Flare: motion of H-alpha kernels and coronal sources. Haisheng Ji Purple Mountain Observatory Nanjing, China. Method to determine the positions of H-alpha kernel (centroid):. But, we need to subtract the background, in order to get the real motion !. T1. T2. Region 1. Region 2. T1. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/1.jpg)
Flare: motion of H-alpha kernels and coronal sources
Haisheng Ji
Purple Mountain Observatory
Nanjing, China
![Page 2: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/2.jpg)
Method to determine the positions of H-alpha kernel (centroid):
But, we need to subtract the background, in order to get the real motion !
![Page 3: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/3.jpg)
T1
T2
Region 1
Region 2
![Page 4: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/4.jpg)
T1
T2
Region 1
Region 2
![Page 5: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/5.jpg)
The M-class flare of Sept 9, 2002
![Page 6: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/6.jpg)
Background-subtracted H-alpha images
![Page 7: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/7.jpg)
![Page 8: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/8.jpg)
Height of the coronal source
![Page 9: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/9.jpg)
The November 1, 2004 M-class event taken at PurpleMountain Observatory with 1s cadence
![Page 10: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/10.jpg)
![Page 11: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/11.jpg)
The M-class flare of August 17, 2002. BBSO full diskimages with 1 minute cadence
![Page 12: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/12.jpg)
Rhessi HXR sourceat different times
![Page 13: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/13.jpg)
12-25 keV
‘Height’ of theHXR sources
Centroid distance of the twoconjugate Ha kernels
![Page 14: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/14.jpg)
The M-1 class flare of July 26, 2002
![Page 15: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/15.jpg)
![Page 16: Flare: motion of H-alpha kernels and coronal sources](https://reader036.vdocument.in/reader036/viewer/2022062315/56814bbf550346895db8930a/html5/thumbnails/16.jpg)
Further work needed:
1) Classify H-alpha kernel motions2) Get fine structure of H-alpha kernel motions3) HXR source motions
To infer reconnection behavior
Thanks!