1 Hinode Monthly Highlights – Slow Solar Wind Sources Derived from recent publication from the Hinode/EIS team through the Naval Research Laboratory EIS.

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Presentation transcript:

1 Hinode Monthly Highlights – Slow Solar Wind Sources Derived from recent publication from the Hinode/EIS team through the Naval Research Laboratory EIS mosaics (2-day spectrometer scan during January 2013): - Temperatures: ~ MK - Pure temperature images of the full Sun at the highest spatial resolution yet achieved - Observation not normally practical due to time and telemetry Goal:Identify sources of the flow of energy and matter throughout the solar system. Solar wind has two components: 1. Fast: coronal holes 2. Slow: ?? Plasma composition used to distinguish the two components and link to solar structures.

2 Hinode Monthly Highlights – Slow Solar Wind Sources Derived from recent publication from the Hinode/EIS team through the Naval Research Laboratory Full Sun plasma composition map - Required 16 million calculations to create! - Darker  Photospheric abundances - Lighter  Coronal abundances Slow solar wind trends toward coronal abundances. Doppler radial velocity map (2 MK) - Red  Inflow (toward Sun) - Blue  Outflow (away from Sun) Magnetic field modeling of large-scale coronal field - Subset of ~1.6 million lines shown - Dotted  Closed - Solid  Open

3 Hinode Monthly Highlights – Slow Solar Wind Sources Derived from recent publication from the Hinode/EIS team through the Naval Research Laboratory Slow solar wind source map - Shear line due to solar rotation during 2-day scan - Red/Green: * Coronal composition * Outflowing plasma * Open field that extends down to ecliptic plane - Red  Active region (AR) boundaries - Green  ~Holes b/t ARs - [Other unknown source high in corona] In situ measurements from ACE - Stable slow solar wind - EIS source map potentially accounts for 50-80% of the flux Note: ~90% of the solar wind flux originates below 40° latitude Optimal candidate campaign for Hinode Focused Mode operations, except for significant tech. issue: - Reduced number of commands available Possible solution: Reduce number of pointings to encompass this 90% region. Telemetry would still be a challenge.