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A blueprint of state-of-the-art techniques for detecting quasi-periodic pulsations in solar and stellar flares
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Broomhall, Anne-Marie, Davenport, James R. A., Hayes, Laura A., Inglis, Andrew R., Kolotkov, Dmitrii Y., McLaughlin, James A., Mehta, Tishtrya, Nakariakov, Valery M., Notsu, Yuta, Pascoe, David J., Pugh, Chloe E. and Doorsselaere, Tom Van (2019) A blueprint of state-of-the-art techniques for detecting quasi-periodic pulsations in solar and stellar flares. The Astrophysical Journal Supplement Series, 244 (2). 44. doi:10.3847/1538-4365/ab40b3
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WRAP-blueprint-state-of-the-art-techniques-detecting-quasi-periodic-pulsations-solar-stellar-flares-Broomhall-2019.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution. Download (3422Kb) | Preview |
Official URL: http://dx.doi.org/10.3847/1538-4365/ab40b3
Abstract
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.
| Item Type: | Journal Article | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QB Astronomy | ||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
| Library of Congress Subject Headings (LCSH): | Astrophysics, Astronomy, Solar flares -- Research, Flare stars, Solar oscillations -- Research, Stellar oscillations -- Research, Pulsating stars | ||||||
| Journal or Publication Title: | The Astrophysical Journal Supplement Series | ||||||
| Publisher: | Institute of Physics Publishing, Inc. | ||||||
| ISSN: | 0067-0049 | ||||||
| Official Date: | 18 October 2019 | ||||||
| Dates: |
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| Volume: | 244 | ||||||
| Number: | 2 | ||||||
| Article Number: | 44 | ||||||
| DOI: | 10.3847/1538-4365/ab40b3 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access |
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