On the Effectiveness of Multi-Instrument Solar Flare Observations During Solar Cycle 24 [SSA]


Our current fleet of space-based solar observatories offer us a wealth of opportunities to study solar flares over a range of wavelengths, and the greatest advances in our understanding of flare physics often come from coordinated observations between different instruments. However, despite considerable effort to coordinate this armada of instruments over the years (e.g. through the Max Millennium Program of Solar Flare Research), there are few solar flares that have been observed by most or all available instruments simultaneously, due to the combination of each instrument’s operational constraints. Here we describe a technique that retrospectively searches archival databases for flares jointly observed by RHESSI, SDO/EVE (MEGS-A and MEGS-B), Hinode/(EIS, SOT and XRT), and IRIS. Out of the 6,953 flares of GOES magnitude C1 or greater that we consider over the 6.5 years after the launch of SDO, 40 have been observed by six or more instruments simultaneously. The difficulty in scheduling co-ordinated observations for solar flare research is discussed with respect to instruments projected to begin operations during Solar Cycle 25, such as the Daniel K. Inouye Solar Telescope, Solar Orbiter and Solar Probe Plus.

Read this paper on arXiv…

R. Milligan and J. Ireland
Tue, 14 Mar 17

Comments: 17 pages, 6 figures, 4 tables. Submitted to Solar Physics