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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…

Solar and Stellar Astrophysics · Physics 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

Space weather forecasting is critical for mitigating radiation risks in space exploration and protecting Earth-based technologies from geomagnetic disturbances. This paper presents the development of a Machine Learning (ML)- ready data…

Solar and Stellar Astrophysics · Physics 2025-02-13 Maher A Dayeh , Michael J Starkey , Subhamoy Chatterjee , Heather Elliott , Samuel Hart , Kimberly Moreland

The radioheliograph image is essential for the study of solar short term activities and long term variations, while the continuity and granularity of radioheliograph data is not so ideal, due to the short visible time of the sun and the…

Solar and Stellar Astrophysics · Physics 2021-01-13 PeiJin Zhang , Chuanbing Wang , Guanshan Pu

In recent years (2000-2021), human-space activities have been increasing faster than ever. More than 36000 Earth' orbiting objects, all larger than 10 cm, in orbit around the Earth, are currently tracked by the European Space Agency (ESA).…

Space Physics · Physics 2023-07-12 S. Aljbaae , J. Murcia-Pineros , A. F. B. A. Prado , R. V. Moraes , V. Carruba , G. A. Carita

Large-scale photometric surveys are revolutionizing astronomy by delivering unprecedented amounts of data. The rich data sets from missions such as the NASA Kepler and TESS satellites, and the upcoming ESA PLATO mission, are a treasure…

Instrumentation and Methods for Astrophysics · Physics 2025-07-08 Jeroen Audenaert

NASA's Solar Dynamics Observatory (SDO) mission collects large data volumes of the Sun's daily activity. Data compression is crucial for space missions to reduce data storage and video bandwidth requirements by eliminating redundancies in…

Image and Video Processing · Electrical Eng. & Systems 2023-09-20 Atefeh Khoshkhahtinat , Ali Zafari , Piyush M. Mehta , Nasser M. Nasrabadi , Barbara J. Thompson , Michael S. F. Kirk , Daniel da Silva

Sunspot numbers provide the longest continuous record of solar activity and remain a key index for heliophysical research and space-weather applications. Standard sunspot determination relies on visual inspection and algorithmic…

Solar and Stellar Astrophysics · Physics 2026-03-25 Fabian C. Quintero-Pareja , Diederik A. Montano-Burbano , Santiago Quintero-Pareja , D. Sierra-Porta

Self-supervised learning (SSL) has enabled the development of vision foundation models for Earth Observation (EO), demonstrating strong transferability across diverse remote sensing tasks. While prior work has focused on network…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Thomas Kerdreux , Alexandre Tuel , Quentin Febvre , Alexis Mouche , Bertrand Chapron

Operational forecasting of the ionosphere remains a critical space weather challenge due to sparse observations, complex coupling across geospatial layers, and a growing need for timely, accurate predictions that support Global Navigation…

Nowadays the use of Machine Learning (ML) algorithms is spreading in the field of Remote Sensing, with applications ranging from detection and classification of land use and monitoring to the prediction of many natural or anthropic…

Image and Video Processing · Electrical Eng. & Systems 2020-08-05 Alessandro Sebastianelli , Maria Pia Del Rosso , Silvia Liberata Ullo

To study and monitor the Sun and its atmosphere, various space missions have been launched in the past decades. With the rapid improvement in technology and different mission requirements, the data products are subject to constant change.…

We present a dataset for investigating the impact of stellar activity on astrometric measurements using NASA's Solar Dynamics Observatory (SDO) images of the Sun. The sensitivity of astrometry for detecting exoplanets is limited by stellar…

Solar and Stellar Astrophysics · Physics 2023-10-20 Warit Wijitworasart , Zoe de Beurs , Andrew Vanderburg

In this work we study the potentialities of machine learning models in reconstructing the solar wind speed observations gathered in the first Lagrangian point by the ACE satellite in 2016--2017 using as input data galactic cosmic-ray flux…

High Energy Astrophysical Phenomena · Physics 2023-02-15 Federico Sabbatini , Catia Grimani

We review solar studies using AIA, HMI, and EVE data from the SDO spacecraft that revolutionized our physical understanding of the Sun. The relevant SDO studies cover the entire 15-year lifetime of SDO, from 2010 May 1 to 2025 May 1. The…

Solar and Stellar Astrophysics · Physics 2025-07-04 Markus J. Aschwanden

In the present work, we collect solar irradiance and atmospheric condition data from several products, obtained from both numerical models (ERA5 and NORA3) and satellite observations (CMSAF-SARAH3). We then train simple supervised Machine…

Atmospheric and Oceanic Physics · Physics 2025-01-23 J Rabault , ML Sætra , A Dobler , S Eastwood , E Berge

The Helioseismic and Magnetic Imager (HMI) onboard NASA's Solar Dynamics Observatory (SDO) produces estimates of the photospheric magnetic field which are a critical input to many space weather modelling and forecasting systems. The…

Solar irradiance is fundamental data crucial for analyses related to weather and climate. High-precision estimation models are necessary to create areal data for solar irradiance. In this study, we developed a novel estimation model by…

Atmospheric and Oceanic Physics · Physics 2024-07-08 Jun Sasaki , Maki Okada , Kenji Utsunomiya , Koji Yamaguchi

Image super-resolution has been an important subject in image processing and recognition. Here, we present an attention-aided convolutional neural network (CNN) for solar image super-resolution. Our method, named SolarCNN, aims to enhance…

Solar and Stellar Astrophysics · Physics 2024-03-28 Chunhui Xu , Jason T. L. Wang , Haimin Wang , Haodi Jiang , Qin Li , Yasser Abduallah , Yan Xu

The immense volume of data generated by the suite of instruments on SDO requires new tools for efficient identifying and accessing data that is most relevant to research investigations. We have developed the Heliophysics Events…

Instrumentation and Methods for Astrophysics · Physics 2012-01-23 N. Hurlburt , M. Cheung , C. Schrijver , L. Chang , S. Freeland , S. Green , C. Heck , A. Jaffey , A. Kobashi , D. Schiff , J. Serafin , R. Seguin , G. Slater , A. Somani , R. Timmons

The rapid growth of solar data is driving changes in the typical workflow and algorithmic approach to solar data analysis. We present recently deployed tools to aid this evolution and layout the path for future development. The majority of…

Instrumentation and Methods for Astrophysics · Physics 2018-07-02 Neal Hurlburt , Sam Freeland , Ryan Timmons