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Determine whether coronal heating is spatially localized or uniform, and time steady or transient or impulsive for a wide range of magnetic loops with different spatial scales. Observe coronal nanoflares in active region moss (Testa et al., 2013).

Same sequence as


Relevant SOOPs:



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

Target: Quiet Sun, Active Regions (different kind of loops – structure, length etc.)

Observing mode: Dynamics (need of Doppler maps)

Slit size : 2”

Exposure time/cadence and numbers of X positions: 10 s, X=224

Field of view : 7’×11’

Number of repetitions of the study: 1 repetition per target

Observation time: 0.6 hours per study; the total observation time depends on the number of targets

Key SPICE lines to be included: C III 977 Å, O VI 1032 Å, Ne VIII 770 Å – 10 lines (4 profiles and 6 intensities)

Other instruments: EUI, PHI


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.