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Magnetic Untwisting i n Most Solar X-Ray Jets

Magnetic Untwisting i n Most Solar X-Ray Jets. Ron Moore, Alphonse Sterling, Dominic Robe, David Falconer, Jonathan Cirtain. NASA/MSFC/ UAHuntsville National Space Science and Technology Center. Main Points. . Hinode/XRT movies show:

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Magnetic Untwisting i n Most Solar X-Ray Jets

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  1. Magnetic Untwisting in Most Solar X-Ray Jets Ron Moore, Alphonse Sterling, Dominic Robe, David Falconer, Jonathan Cirtain NASA/MSFC/UAHuntsville National Space Science and Technology Center

  2. Main Points  Hinode/XRT movies show: 50% of X-ray jets are standard jets, and 50% are blowout jets.  SDO/AIA He II 304 Å movies confirm: Standard X-ray jets don’t expand laterally because they are made by interchange reconnection. Blowout X-ray jets do expand laterally because they are made by blowout filament eruptions. - -  SDO/AIA He II 304 Å movies reveal: X-ray jets spin and sway.  Type-II Spicules are like X-ray jets in having: Sideways-expansion dichotomy. Spin and sway. - -  We infer that Type-II spicules are: Small analogs of X-ray jets. Erupt from the granule-size emerging bipoles discovered by Hinode /SP. Numerous enough to power the global corona and solar wind. - - -

  3. Outline Introduction X-Ray Jets Type-II Spicules and Coronal Heating

  4. Swaying Spinning Standard Jet: Blowout Jet:

  5. Example Standard X-Ray Jet 2010 Aug 28, Hinode/XRT Ti Poly

  6. Cool Component of Example Standard X-Ray Jet 2010 Aug 28, SDO/AIA He II 304 Å

  7. Spin of Cool Component of Example Standard X-Ray Jet 2010 Aug 28, SDO/AIA He II 304 Å

  8. Example Blowout X-Ray Jet 2011 Mar 24, Hinode/XRT Thin Al Poly, Fixed-Difference Sequence

  9. Cool Component of Example Blowout X-Ray Jet 2011 Mar 24, SDO/AIA He II 304 Å

  10. Spin of Cool Component of Example Blowout X-Ray Jet 2011 Mar 24, SDO/AIA He II 304 Å

  11. Key Observed Features of X-Ray Jets  Erupt from closed-bipole base.  Dichotomy of sideways expansion.  Spin and sway.

  12. Standard-Jet/Blowout-Jet Dichotomy of Type-II Spicules (from Sterling et al 2010, ApJ,714, L6) 20-30 km/s Spinning (Evidence of Torsional Alfven Waves ) 10-20 km/s Swaying (Evidence of Alfvenic MHD Waves) Single-Spike Type-II Spicule (Similar to Standard X-Ray Jets) Laterally-Expanding Type-II Spicule (Similar to Blowout X-Ray Jets)

  13. Granule-Size Emerging Magnetic Bipoles (EBs) Population Density and Loose Proximity to Magnetic Network (from Lites et al 2008, ApJ, 672, 1237) Magnetic Network Vertical Field ( 50 G) Horizontal Field in Granule-Size EBs (100 G) EB Population Density: 1 per 10 granules (100 per supergranule). Non-Uniform Spatial Distribution: EBs are loosely clustered around the network flux.

  14. Scenario: Emerging granule-size bipoles at feet of coronal field power corona and solar wind by generating Type-II spicules and MHD waves a la X-ray jets. (cartoon adapted from Falconer et al 2003, ApJ, 593, 549) Alfven Waves Fast-Mode Waves Blowout-Jet Type-II Spicule From Erupting EB Standard-Jet Type-II Spicule From Stable EB  30,000 km

  15. Conclusion If Type-II spicules are made like X-ray jets by granule-size emerging bipoles, then they plausibly power the quiet corona and solar wind.

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