A Blueprint of State-of-the-art Techniques for Detecting Quasi-periodic Pulsations in Solar and Stellar Flares
A Blueprint of State-of-the-art Techniques for Detecting Quasi-periodic Pulsations in Solar and Stellar Flares
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DOI：
10.3847/1538-4365/ab40b3
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发表时间：
2018-04
期刊：
影响因子：
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通讯作者：
A. Broomhall;J. Davenport;L. Hayes;A. Inglis;D. Kolotkov;J. McLaughlin;T. Mehta;V. Nakariakov
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文献类型：
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作者：
A. Broomhall;J. Davenport;L. Hayes;A. Inglis;D. Kolotkov;J. McLaughlin;T. Mehta;V. Nakariakov
准周期脉动（QPPs）似乎是在太阳和恒星耀斑的光曲线中观测到的一个共同特征。然而，它们的准周期性质，以及它们振幅小、寿命短的事实，使得量子粒子难以明确地探测到。在本文中，我们使用一系列野兔和猎犬练习来测试检测qpp的最先进方法的优势和局限性。研究人员模拟了一系列有或没有各种形式qpp的耀斑，而猎犬则试图在盲测中发现qpp。我们使用这些练习的结果为任何希望在真实的太阳和恒星数据中探测量子粒子的人创建了一个蓝图。我们提出了八项明确的建议，以便在未来的QPP探测中记住，因为新的和未来的卫星提供了大量的太阳和恒星耀斑数据。这些建议解决了QPP检测中的关键缺陷，包括去趋势、修剪数据、考虑彩色噪声、检测平稳周期QPP、检测非平稳周期QPP，以及确保检测的鲁棒性和最大限度地减少误检测。我们发现，如果采取适当的注意和尽职调查，可以通过各种方法可靠而稳健地检测到qpp，这些方法可以清楚地识别和描述。
Quasi-periodic pulsations (QPPs) appear to be a common feature observed in the light curves of both solar and stellar flares. However, their quasi-periodic nature, along with the fact that they can be small in amplitude and short-lived, makes QPPs difficult to unequivocally detect. In this paper, we test the strengths and limitations of state-of-the-art methods for detecting QPPs using a series of hare-and-hounds exercises. The hare simulated a set of flares, both with and without QPPs of a variety of forms, while the hounds attempted to detect QPPs in blind tests. We use the results of these exercises to create a blueprint for anyone who wishes to detect QPPs in real solar and stellar data. We present eight clear recommendations to be kept in mind for future QPP detections, with the plethora of solar and stellar flare data from new and future satellites. These recommendations address the key pitfalls in QPP detection, including detrending, trimming data, accounting for colored noise, detecting stationary-period QPPs, detecting QPPs with nonstationary periods, and ensuring that detections are robust and false detections are minimized. We find that QPPs can be detected reliably and robustly by a variety of methods, which are clearly identified and described, if the appropriate care and due diligence are taken.