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arXiv 1703.04412astro-ph.SR
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第24周太阳耀斑的多仪器观测性能

On the Performance of Multi-Instrument Solar Flare Observations During Solar Cycle 24

Ryan O. Milligan, Jack Ireland

摘要:

现有的空间太阳观测站为我们研究各种波长范围内的太阳耀斑提供了大量机会。我们对耀斑物理学的理解的重大进展往往来自多台仪器之间的协调观测。因此,已经并将继续作出相当大的努力来协调各种仪器之间的观测(例如通过太阳耀斑研究最大千年方案)。然而,迄今为止还没有任何研究可以量化各种仪器组合观测到的耀斑数量。在这里,我们描述了一种技术,回顾性地搜索档案数据库的耀斑联合观察RHESSI,SDO/EVE(MEGS-A和-B),日出/(EIS,SOT,和XRT),和IRIS。在SDO发射后的6.5年中,我们考虑了6953次GOES震级C1或更大的耀斑,其中40次被6台或更多仪器同时观测到。使用每个仪器的个别成功率在观察耀斑,我们表明,由三个或更多的仪器共同观察到的耀斑的数量高于预期的假设下,仪器独立操作彼此的数量。特别是,大量仪器观测到的耀斑数量比预期的要多得多。我们的研究表明,这些特派团经常合作行动,或者至少有一致的目标。我们还提供了一个交互式的小部件,现在在SSWIDL,允许用户搜索耀斑事件,已观察到的一组选定的仪器的细节。这提供了更广泛的活动,以回答具体的科学问题。调度协调观测太阳耀斑研究的困难进行了讨论,预计在太阳活动周期25,如DKIST,太阳轨道器和帕克太阳探测器开始运作的仪器。

英文摘要:

The current fleet of space-based solar observatories offers us a wealth of opportunities to study solar flares over a range of wavelengths. Significant advances in our understanding of flare physics often come from coordinated observations between multiple instruments. Consequently, considerable efforts have been, and continue to be made to coordinate observations among instruments (e.g. through the Max Millennium Program of Solar Flare Research). However, there has been no study to date that quantifies how many flares have been observed by combinations of various instruments. Here we describe a technique that retrospectively searches archival databases for flares jointly observed by RHESSI, SDO/EVE (MEGS-A and -B), Hinode/(EIS, SOT, and XRT), and IRIS. Out of the 6953 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. Using each instrument's individual rate of success in observing flares, we show that the numbers of flares co-observed by three or more instruments are higher than the number expected under the assumption that the instruments operated independently of one another. In particular, the number of flares observed by larger numbers of instruments is much higher than expected. Our study illustrates that these missions often acted in cooperation, or at least had aligned goals. We also provide details on an interactive widget now available in SSWIDL that allows a user to search for flaring events that have been observed by a chosen set of instruments. This provides access to a broader range of events in order to answer specific science questions. The difficulty in scheduling coordinated observations for solar-flare research is discussed with respect to instruments projected to begin operations during Solar Cycle 25, such as DKIST, Solar Orbiter, and Parker Solar Probe.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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