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  • Current sheets inferred by determining the magnetic field geometries at local chromospheric heating sites (Fletcher et al., 2001).

 

Operational requirements table: 

 

Requirement
YES / NO / Not required / MAYBE / GOOD TO HAVE / NUMBERS
Remarks
Duration of the observations? 
PerihelionYes 
RS windowYes 
High latitudeNo 
Solar cycle dependenceGood to have 
Radial dependenceNo 
Linkage scienceNo 
Multiple orbitsGood to have 
Far side observationsNo 
Earth observationsGood to have 
EMC QuietNo 
SPPNo 
InstrumentsSoloHI, PHI, METIS, SPICE, EUI

RS only

 

 

Required observations:

  • SoloHI: Contribute (mode: synoptic+shock+turbulence), no min. obs time, all distances.
  • No EUI.

  • SPICE
    • Target: Mostly active regions but not only
    • Observing mode: Dynamics
    • Slit: 2'' and 4''
    • Exposure time/cadence and number of X positions:  5 s, X=480 and X=224
    • Field of View: 16’×11’ and 15’×11’
    • Number of repetitions of the study: 10 and 5
    • Observation time: 7 hours (0.7 hours per study with 2” slit) and 1.6 hours (0.3 hours per study with 4” slit)
    • Key SPICE lines to be included: H I 1025 Å, C II 1036 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)
    • Observing window preference: 
    • Other instruments: EUI(?), METIS, PHI, SoloHI
    • 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 or 4 pixels)

  • PHI

    FDT medium-high  resolution data

    Requirement

    FOV [pixels]

    1024 x 1024 – 2048 x 2048

    Parameters

    Ic, B, γ, φ

    duration

    10 days

    cadence

    1/(10 min)

    N orbits

    4

    solar distance

    entire orbit

    PHI operating mode

    2

    co-ordination

    ?

    HRT high  resolution data

    Requirement

    FOV [pixels]

    2048 x 2048

    Parameters

    Ic, vLOS, B, γ, φ (interlaced with raw data)

    duration

    5 hours

    cadence

    1/(1 min)

    N orbits

    2

    solar distance

    perihelion, polar passage

    PHI operating mode

    0

    co-ordination

    ?

  • METIS: Measurement of the electron density through the polarised brightness in VL (580-640 nm) in the field of view 1.5-2.9 degrees to derive the evolution of the magnetic field topology from the global corona evolution in different time-scales.
    • Products:
      • Global maps of the electron density in corona/coronal configuration.
    • Modes:
      • MAGTOP (min. obs time 2 hr, data volume ≤ 480 Mb)
      • GLOBAL (min. obs time 2 hr, data volume ≤ 300 Mb)
        Repeated each half a day in one observation window.
    • Other instruments: PHI, EUI, SoloHI, MAG, SWA.

Duration:

Other constraints:

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