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June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck...
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![Page 1: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/1.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Kelly E. Korreck
Harvard-Smithsonian Center for Astrophysics
Cambridge, MA
X-ray Observations of Solar Magnetic Reconnection Sites
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Outline
• The satellite and the instruments
• What was the state of understanding with Yohkoh
• Science questions to be answered
• First look at Hinode data
• What else we will do with Hinode data
• Other questions/future work
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
HINODE (Solar-B)
JAXA, NASA, & PPARC– Solar Optical Telescope (SOT)
• Magnetic fields, photosphere, & Chromosphere (LM, NAOJ)
– EUV Imaging Spectrometer (EIS)• Transition Region, Corona (170-210 Å &
250-290 Å) (NRL, MSSL)
– X-ray Telescope (XRT)• Corona, Soft X-rays (6-200 Å)• G-band 4305 Å • SAO & JAXA
Sept 22, 2006
Uchinoura Space Center, Japan
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
• Wolter-I grazing incidence mirror with co-focal visible light optics
• 2048x2048 back-illuminated CCD 13.5 µm pixel size
FOV 34 x 34 arcmin
Plate scale 1”/pixel
![Page 5: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/5.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Field of View
• SOT– Broadband Filter Imager
(BFI)
– Narrowband Filter Imager (NFI)
• EIS– 1” & 2” slits
– 40” & 266” wide Slots
• XRT– Full Sun & smaller
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Theoretical Temperature response for unit volume emission measure of 1044.0cm-3 for each filter.
Transmission profiles for filters, X-ray reflectivity of mirror, & qE of CCD detector are taken into account.
![Page 7: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/7.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Filter comparison
Al Poly
Al-Poly
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Filter comparison
C Poly
C-Poly
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Filter comparison
Be Thin
thin-Be
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Filter comparison
Be ThinAl Poly C Poly
11/22/2006 17:53UT
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
SXT&XRT
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
SXT&XRT
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
XRT & SXI
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
TRACE & XRT are Complimentary
XRT 11/13/06
TRACE 11/13/06
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
First 90 days
• Coronal Voids
• X-flare
• Jets, Outflows, Downflows
• Coordinated observations with EIS & SOT
• Global Coronal Activity
• Quiet Sun
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Loops on the Limb
QuickTime™ and aPNG decompressor
are needed to see this picture.
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
![Page 18: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/18.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Determining Temperatures
•Useful for understanding location of flare heating, cooling processes in flares and solar eruptions.
•Method 1 - Filter Ratios
•Method 2 - Differential Emission Measure Analysis
![Page 20: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/20.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Observations
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Filter Ratio Analysis
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Filter Ratios
* **
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Filter Ratio Analysis
![Page 24: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/24.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
DEM Analysis
•Method developed by M. Weber, E. DeLuca, L. Golub (see L. Golub et al., 2004)
•DEM determined by a least-squares minimization algorithm
•Random error generation for determining DEM errors
![Page 25: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/25.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
DEM Analysis
ambient corona flare loop
![Page 26: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/26.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
DEM Analysis
ambient corona flare loop
![Page 27: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/27.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Emission Measures inDifferent Temperature Bins
2-3 MK 3-5 MK 5-10 MK
![Page 28: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/28.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Emission Measures inDifferent Temperature Bins
10-20 MK 20-50 MK 50-100 MK
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Where is the Hot Plasma?
![Page 30: June 7, 2015 Kelly E. Korreck Smithsonian Astrophysical Observatory Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA X-ray Observations.](https://reader038.fdocuments.us/reader038/viewer/2022102907/56649d2f5503460f94a073c9/html5/thumbnails/30.jpg)
April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Conclusions so far...•Post-flare loops contain multi-
thermal plasma, ambient corona is closer to two-temperature plasma
•Hot plasma is not well determined using this method with only XRT data
•RHESSI data should be useful in constraining high temperature plasma
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Stay tuned for more great XRT flare data as solar maximum
approaches...
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
CMS models
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Acknowledgements
• P. Jibben for this wonderful template
• The entire XRT SAO team
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April 18, 2023Kelly E. Korreck
Smithsonian Astrophysical Observatory
Access To Hinode Data
• Chief Coordinators:– John Davis ([email protected])– Tetsuya Watanabe ([email protected].
jp)• Science Schedule Coordinators (in U.S.):
– SOT: T. Berger ([email protected])– XRT: L. Golub ([email protected])– EIS: J. Mariska ([email protected])
• XRT Observing (XOB) Proposals: http://solar.physics.montana.edu/HINODE/XRT