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Small magnetic elements

Small magnetic elements. Judith Palacios USO-SP SCHOOL Stockholm-Tammsvik, 2010. USO Trainee in Utrecht : Facular contrast Currently, PhD student at the University of Valencia, Spain The rest of the team: Vicente Domingo (supervisor), Iballa Cabello, Laura Balmaceda

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Small magnetic elements

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  1. Small magnetic elements Judith Palacios USO-SP SCHOOLStockholm-Tammsvik, 2010

  2. USO Trainee in Utrecht : Facular contrast • Currently, PhD student at the University of Valencia, Spain • The rest of the team: Vicente Domingo (supervisor), Iballa Cabello, Laura Balmaceda • Topics: small magnetic elements, vortices, irradiance, SUNRISE/IMaX

  3. Some propaganda... • Announcement of a 2-year POSTDOC position at the University of Valencia Some of the tasks: Explotation of SUNRISE/IMaX data and SO-PHI definition URGENT! SHOULD BE FILLED IN FEB!!

  4. Hinode and SST data A quiet-Sun region on 2007, 29 Sept was selected in the center of the solar disk. A image set was restored from 08:40 UT to 09:20 UT. These data in G-band in SST were rotated and aligned with magnetograms of MgI and CN filtergrams from Hinode. The size of the area of interest (in coincidence with Hinode) is 19”18x74”09. P-modes were removed.

  5. SST DATA PROCESSING Image restoration with MOMFBD (Multi-Frame Blind Deconvolution with Multiple Objects and Phase Diversity). (Courtesy of Iballa Cabello) (Solar Image Restoration by use of Multi-Frame Blind Deconvolution with Multiple Objects and Phase Diversity, van Noort, M.; van der Voort, L.R. and Löfdahl, M. Solar Phys (2005) 228,191.)

  6. SST G-band and MDI magnetogram

  7. Small magnetic elements: recognition of GBPs These GBP were found by the method mentioned in Sánchez Almeida et al 2004. (GBP which appear in the reference frame, stay in an intergranular lane,and in 3 or more snapshots). The calculated area coverage for GBP in the surface is 0.26% . The area coverage in Sánchez Almeida et al is 0.5%

  8. Properties of GBP (SST)

  9. Small magnetic elements: recognition of BP in Hinode CN Multiple-level pattern recognition (MLT_4) of Bovelet, Wiehr 2007. This method was used to detect BP in CN band. Area coverage is 0.22%.

  10. Small magnetic elements: properties of BP in Hinode CN

  11. Recognition of magnetic elements in MgI magnetograms corresponding to CN

  12. Comparison of CN and Gband struct.

  13. More references • Utz et al 2009 make a good statistical study about the real lifetimes of GBPs, considering cadence, splitting rates and proper motions. • About lifetimes: Utz (2009)2.5min De Wijn (2008) 10 min De Wijn (2005) 3.5 min Almeida (2004) <10min

  14. THANKS FOR YOUR ATTENTION!!!

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