XRT X-ray Observations of Solar Magnetic Reconnection Sites

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Presentation transcript:

XRT X-ray Observations of Solar Magnetic Reconnection Sites Kelly E. Korreck Harvard-Smithsonian Center for Astrophysics Cambridge, MA April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

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 April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

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 April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory XRT 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 April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

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 April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

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. April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Filter comparison Al Poly Al-Poly April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Filter comparison C Poly C-Poly April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Filter comparison Be Thin thin-Be April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Filter comparison Al Poly C Poly Be Thin 11/22/2006 17:53UT April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory SXT & XRT April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory SXT & XRT April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory XRT & SXI April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

TRACE & XRT are Complimentary April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory First 90 days Coronal Voids X-flare Jets, Outflows, Downflows Coordinated observations with EIS & SOT Global Coronal Activity Quiet Sun April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Loops on the Limb April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory April 16, 2017 Kelly 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 April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Observations April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Filter Ratio Analysis April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Filter Ratios * * * April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Filter Ratio Analysis April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

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 April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory DEM Analysis ambient corona flare loop April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory DEM Analysis ambient corona flare loop April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Emission Measures in Different Temperature Bins 2-3 MK 3-5 MK 5-10 MK April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Emission Measures in Different Temperature Bins 10-20 MK 20-50 MK 50-100 MK April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Where is the Hot Plasma? April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

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 April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Stay tuned for more great XRT flare data as solar maximum approaches... April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory CMS models April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Acknowledgements P. Jibben for this wonderful template The entire XRT SAO team April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory

Smithsonian Astrophysical Observatory Access To Hinode Data Chief Coordinators: John Davis (john.m.davis@nasa.gov) Tetsuya Watanabe (watanabe@uvlab.mtk.nao.ac.jp) Science Schedule Coordinators (in U.S.): SOT: T. Berger (berger@lmsal.com) XRT: L. Golub (golub@cfa.harvard.edu) EIS: J. Mariska (mariska@nrl.navy.mil) XRT Observing (XOB) Proposals: http://solar.physics.montana.edu/HINODE/XRT April 16, 2017 Kelly E. Korreck Smithsonian Astrophysical Observatory