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Resolve the geometry of fine elemental loop strands (Aschwanden et al., 2002; Reale et al., 2007) and define the possible multi-temperature nature of such structures and their transversal expansion in the corona, giving insight to the level of the tangling of the magnetic flux tubes (Lopez Fuentes et al., 2006).

 

No dynamics.

 

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  • SPICE: (updated by Alessandra Giunta 01/12/2015):

    Target: Active Regions (different regions if possible)

    Observing mode: Dynamics (temperature coverage required)

    Slit size: 2”

    Exposure time/cadence and numbers of X positions: 20 s, X=128

    Field of view: 4’×11’

    Number of repetitions of the study: 1 per target or 2 on the same target

    Observation time: 0.7 hours per study

    Key SPICE lines to be included: H I 1025 Å, C III 977 Å, O VI 1032 Å, Ne VIII 770 Å, Mg IX 706 Å, Si XII 520 Å (x2) – 10 lines (4 profiles and 6 intensities)

    Other instruments: EUI, PHI

    Comments:

    - The choice of lines, and also the number of intensities and profiles, is flexible, although the sum of the intensities and profiles is constrained to a maximum (e.g 15 for composition mapping). While varying the number of intensities and profiles, within the maximum, has no effect on the duration of the study, it will have an effect on the telemetry.

    - Possible binning on Y direction (groups of 2 pixels)