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Solar flares are events of intense scientific interest. Although certainsolar conditions are known to be associated with flare activity, the exactlocation and timing of an individual flare on the Sun cannot as yet bepredicted with certainty. Missions whose science objectives depend on observingsolar flares must often make difficult decisions on where to target theirobservations if they do not observe the full solar disk. Yet, little analysisexists in the literature which might guide these missions' operations tomaximize their opportunities to observe flares. In this study we analyze andsimulate the performance of different observation strategies using historicalflare and active region data from 2011 to 2014. We test a number of differenttarget selection strategies based on active region complexity and recent flareactivity, each of which is examined under a range of operational assumptions.In each case we investigate various metrics such as the number of flaresobserved, the size of flares observed, and operational considerations such asthe number of instrument re-points that are required. Overall, target selectionmethods based on recent flare activity showed the best overall performance, butrequired more repointings than other methods. The mission responsiveness to newinformation is identified as a strong factor determining flare observationperformance. It is also shown that target selection methods based on activeregion complexities show a significant pointing bias towards the western solarhemisphere. The number of flares observed grows quickly with field-of-view sizeuntil the approximate size of an active region is reached, but furtherimprovements beyond the active region size are much more incremental. Theseresults provide valuable performance estimates for a future mission focused onsolar flares, and inform the requirements that would ensure mission success.

Evaluating Pointing Strategies for Future Solar Flare Missions