Single and Multiwavelength Detection of Coronal Dimming and Coronal Wave Using Faster R-CNN. (8th July 2019)

• Record Type: Journal Article
• Authors: Xie, Zongxia; Ji, Chunyang
• Other Names: Wang Huaning Guest Editor.
• Is Part Of: Advances in astronomy. Volume 2019(2019)
• Publication Date: 2019-07-08
• Subjects: Astronomy -- Periodicals; Astronomy; Periodicals; 520
• DOI: 10.1155/2019/7821025
• Languages: English
• ISSNs: 1687-7977

Abstract

Abstract : Automatic detection of solar events, especially uncommon events such as coronal dimming (CD) and coronal wave (CW), is very important in solar physics research. The CD and CW are not only related to the detection of coronal mass ejections (CMEs) but also affect space weather. In this paper, we have studied methods for automatically detecting them. In addition, we have collected and processed a dataset that includes the solar images and event records, where the solar images come from the Atmospheric Imaging Assembly (AIA) of Solar Dynamics Observatory (SDO) and the event records come from Heliophysics Event Knowledgebase (HEK). Different from the methods used before, we introduce the idea of deep learning. We train single-wavelength and multiwavelength models based on Faster R-CNN. In terms of accuracy, the single-wavelength model performs better. The multiwavelength model has a better detection performance on multiple solar events than the single-wavelength model.