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One of the many outcomes of the Solar Orbiter mission is the evidence for the solar atmosphere being filled by highly impulsive bursts, down to about 200 km scale: the limit of the EUV instruments' spatial resolution. Small-scale events of…

太阳与恒星天体物理 · 物理学 2025-12-09 Susanna Parenti

Predominant methods for image-based drone detection frequently rely on employing generic object detection algorithms like YOLOv5. While proficient in identifying drones against homogeneous backgrounds, these algorithms often struggle in…

计算机视觉与模式识别 · 计算机科学 2024-11-11 Tamara R. Lenhard , Andreas Weinmann , Stefan Jäger , Tobias Koch

We aim to reproduce the structure of the corona above a solar active region as seen in the extreme ultraviolet (EUV) using a three-dimensional magnetohydrodynamic (3D MHD) model. The 3D MHD data-driven model solves the induction equation…

太阳与恒星天体物理 · 物理学 2019-04-30 Jörn Warnecke , Hardi Peter

The constant improvement of astronomical instrumentation provides the foundation for scientific discoveries. In general, these improvements have only implications forward in time, while previous observations do not benefit from this trend.…

太阳与恒星天体物理 · 物理学 2025-05-29 Robert Jarolim , Astrid M. Veronig , Werner Pötzi , Tatiana Podladchikova

Since the Solar Dynamics Observatory (SDO) began recording ~ 1 TB of data per day, there has been an increased need to automatically extract features and events for further analysis. Here we compare the overall detection performance,…

太阳与恒星天体物理 · 物理学 2011-09-05 Cis Verbeeck , Paul A. Higgins , Tufan Colak , Fraser T. Watson , Veronique Delouille , Benjamin Mampaey , Rami Qahwaji

Solar activity is usually caused by the evolution of solar magnetic fields. Magnetic field parameters derived from photospheric vector magnetograms of solar active regions have been used to analyze and forecast eruptive events such as solar…

太阳与恒星天体物理 · 物理学 2023-07-26 Haodi Jiang , Qin Li , Zhihang Hu , Nian Liu , Yasser Abduallah , Ju Jing , Genwei Zhang , Yan Xu , Wynne Hsu , Jason T. L. Wang , Haimin Wang

A deep learning model is often considered a black-box model, as its internal workings tend to be opaque to the user. Because of the lack of transparency, it is challenging to understand the reasoning behind the model's predictions. Here, we…

机器学习 · 计算机科学 2025-08-25 Adam O. Rawashdeh , Jason T. L. Wang , Katherine G. Herbert

Image saturation has been an issue for several instruments in solar astronomy, mainly at EUV wavelengths. However, with the launch of the Atmospheric Imaging Assembly (AIA) as part of the payload of the Solar Dynamic Observatory (SDO) image…

太阳与恒星天体物理 · 物理学 2019-09-25 Sabrina Guastavino , Michele Piana , Anna Maria Massone , Richard Schwartz , Federico Benvenuto

Coronal waves are large-scale disturbances often driven by coronal mass ejections (CMEs). We investigate a spectacular wave event on 7 March 2012, which is associated with an X5.4 flare (SOL2012-03-07). By using a running center-median…

太阳与恒星天体物理 · 物理学 2020-11-04 Li Feng , Lei Lu , Bernd Inhester , Joseph Plowman , Beili Ying , Marilena Mierla , Matthew J. West , Weiqun Gan

Precise detection of rooftops from historical aerial imagery is essential for analyzing long-term urban development and human settlement patterns. Nonetheless, black-and-white analog photographs present considerable challenges for modern…

计算机视觉与模式识别 · 计算机科学 2025-07-22 Pengyu Chen , Sicheng Wang , Cuizhen Wang , Senrong Wang , Beiao Huang , Lu Huang , Zhe Zang

Academic integrity continues to face the persistent challenge of examination cheating. Traditional invigilation relies on human observation, which is inefficient, costly, and prone to errors at scale. Although some existing AI-powered…

计算机视觉与模式识别 · 计算机科学 2026-04-20 Van-Truong Le , Le-Khanh Nguyen , Trong-Doanh Nguyen

Coronal Mass Ejections (CMEs) are space weather phenomena capable of causing significant disruptions to both space- and ground-based infrastructure. The timely and accurate detection and prediction of CMEs is a crucial steps towards…

太阳与恒星天体物理 · 物理学 2025-10-16 Maike Bauer , Justin Le Louëdec , Tanja Amerstorfer , Luke Barnard , David Barnes , Helmut Lammer

The Extreme-ultraviolet Variability Experiment (EVE) onboard the Solar Dynamics Observatory (SDO) detects the solar EUV spectra with high temporal cadence and spectral resolution. The wavelength shifts of emission lines provide key…

太阳与恒星天体物理 · 物理学 2021-04-21 Zhixun Cheng , Yuming Wang , Rui Liu

The analysis of current and future cosmological surveys of type Ia supernovae (SNe Ia) at high-redshift depends on the accurate photometric classification of the SN events detected. Generating realistic simulations of photometric SN surveys…

Solar tornados are dynamical, conspicuously helical magnetic structures mainly observed as a prominence activity. We investigate and propose a triggering mechanism for the solar tornado observed in a prominence cavity by SDO/AIA on…

太阳与恒星天体物理 · 物理学 2015-06-12 N. K. Panesar , D. E. Innes , S. K. Tiwari , B. C. Low

This paper presents a study of a large sample of global disturbances in the solar corona with characteristic propagating fronts as intensity enhancement, similar to the phenomena that have often been referred to as EIT waves or EUV waves.…

太阳与恒星天体物理 · 物理学 2015-06-16 Nariaki V. Nitta , Carolus J. Schrijver , Alan M. Title , Wei Liu

There is a pressing need to model X-ray Ultra-Violet (XUV: 1-30 nm) stellar irradiances, given the scarcity of current measurements. One of the measurable effects of a stellar cycle is the significant (more than one order of magnitude)…

太阳与恒星天体物理 · 物理学 2025-04-14 E. Deliporanidou , G. Del Zanna , T. N. Woods , D. Woodraska

We review major achievements in our understanding of multiphase coronal plasma, where cool-dense and hot-tenuous matter coexists, brought about by advances in modeling and theory, inspired by observations. We give an overview of models that…

太阳与恒星天体物理 · 物理学 2025-10-30 Rony Keppens , Yuhao Zhou , Chun Xia

Oscillations in solar prominences are a frequent phenomenon, and they have been the subject of many studies. A full understanding of the mechanisms that drive them and their attenuation has not been reached yet. We numerically investigate…

太阳与恒星天体物理 · 物理学 2020-01-22 A. Adrover-González , J. Terradas

A bright prominence associated with a coronal mass ejection (CME) was seen erupting from the Sun on 9 April 2008. This prominence was tracked by both the Solar Terrestrial Relations Observatory (STEREO) EUVI and COR1 telescopes, and was…

太阳与恒星天体物理 · 物理学 2011-12-16 W. T. Thompson , B. Kliem , T. Török