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Solar wind backmapping is a critical technique for analyzing the origin of the solar wind and space weather events by correlating in situ measurements with solar remote-sensing observations. This technique typically traces magnetic field…

Solar and Stellar Astrophysics · Physics 2025-10-27 Xinyi Ma , Liping Yang , Xueshang Feng , Hui Tian , Honghong Wu , Fang Shen , Wangning Zhang , Mengxuan Ma , Xiao Zhang , Ziwei Wang

Understanding the generation and development of the continuous outflow from the Sun requires tracing the physical conditions from deep in the corona to the heliosphere. Detailed global observations of plasma state variables and the magnetic…

Solar and Stellar Astrophysics · Physics 2025-05-01 Yeimy J. Rivera , Samuel T. Badman

The most violent space weather events (eruptive solar flares and coronal mass ejections) are driven by the release of free magnetic energy stored in the solar corona. Energy can build up on timescales of hours to days, and then may be…

Solar flares, as one of the most prominent manifestations of solar activity, have a profound impact on both the Earth's space environment and human activities. As a result, accurate solar flare prediction has emerged as a central topic in…

Solar and Stellar Astrophysics · Physics 2026-03-31 Mingfu Shao , Suo Liu , Haiqing Xu , Peng Jia , Hui Wang , Liyue Tong , Yang Bai , Chen Yang , Yuyang Li , Nan Li , Jiaben Lin

Foundation models (FMs) for the Earth system learn statistical relationships between physical variables across massive datasets to enable versatile downstream applications through finetuning, separating them from task-specific weather…

Knowledge about the background solar wind plays a crucial role in the framework of space weather forecasting. In-situ measurements of the background solar wind are only available for a few points in the heliosphere where spacecraft are…

Solar and Stellar Astrophysics · Physics 2013-12-05 C. Gressl , A. M. Veronig , M. Temmer , D. Odstrcil , J. A. Linker , Z. Mikic , P. Riley

Determining the mechanisms responsible for the heating of the coronal plasma and maintaining and accelerating the solar wind are long standing goals in solar physics. There is a clear need to constrain the energy, mass and momentum flux…

Solar and Stellar Astrophysics · Physics 2016-11-21 R. J. Morton , E. Scullion , D. S. Bloomfield , J. A. McLaughlin , S. Regnier , S. W. McIntosh , S. Tomczyk , P. Young

Space Weather is the study of the conditions in the solar wind that can affect life on the surface of the Earth, particularly the increasingly technologically sophisticated devices that are part of modern life. Solar radio observations are…

Solar and Stellar Astrophysics · Physics 2024-05-03 Stephen M. White

Coronal mass ejections (CMEs) are primary drivers of space weather and studying their evolution in the inner heliosphere is vital to prepare for a timely response. Solar wind streams, acting as background, influence their propagation in the…

Solar and Stellar Astrophysics · Physics 2023-10-30 Prateek Mayank , Bhargav Vaidya , Wageesh Mishra , D. Chakrabarty

Aims: We develop a method for estimating the properties of stellar winds for low-mass main-sequence stars between masses of 0.4 and 1.1 solar masses at a range of distances from the star. Methods: We use 1D thermal pressure driven…

Solar and Stellar Astrophysics · Physics 2015-04-29 C. P. Johnstone , M. Güdel , T. Lüftinger , G. Toth , I. Brott

Space weather predictions of the solar wind impacting Earth are usually first based on remote-sensing observations of the solar disc and corona, and eventually validated and/or refined with in-situ measurements taken at the Sun$-$Earth…

Space Physics · Physics 2025-11-12 Erika Palmerio

The solar wind drag-based model is a widely used framework for predicting the propagation of Coronal Mass Ejections (CMEs) through interplanetary space. This model primarily considers the aerodynamic drag exerted by the solar wind on CMEs.…

Solar and Stellar Astrophysics · Physics 2025-02-19 Mattia Rossi , Sabrina Guastavino , Michele Piana , Anna Maria Massone

In the past decade, significant efforts have been made in developing physics-based solar wind and coronal mass ejection (CME) models, which have been or are being transferred to national centers (e.g., SWPC, CCMC) to enable space weather…

Solar and Stellar Astrophysics · Physics 2022-04-06 Meng Jin , Nariaki V. Nitta , Christina M. S. Cohen

We present a scalable machine learning framework for analyzing Parker Solar Probe (PSP) solar wind data using distributed processing and the quantum-inspired Kernel Density Matrices (KDM) method. The PSP dataset (2018--2024) exceeds 150 GB,…

SDO-FM is a foundation model using data from NASA's Solar Dynamics Observatory (SDO) spacecraft; integrating three separate instruments to encapsulate the Sun's complex physical interactions into a multi-modal embedding space. This model…

Modeling environmental ecosystems is essential for effective resource management, sustainable development, and understanding complex ecological processes. However, traditional data-driven methods face challenges in capturing inherently…

Machine Learning · Computer Science 2025-04-08 Runlong Yu , Shengyu Chen , Yiqun Xie , Huaxiu Yao , Jared Willard , Xiaowei Jia

The propagation of solar energetic particles (SEPs) through the heliosphere is primarily guided by the interplanetary magnetic field (IMF) which is embedded in the solar wind plasma. Large-scale IMF structures can drive transient variations…

A solar active region can significantly disrupt the Sun Earth space environment, often leading to severe space weather events such as solar flares and coronal mass ejections. As a consequence, the automatic classification of active region…

Solar and Stellar Astrophysics · Physics 2024-10-24 Edoardo Legnaro , Sabrina Guastavino , Michele Piana , Anna Maria Massone

Previous ambient solar wind (SW) validation studies have reported on discrepancies between modeled and observed SW conditions at L1. They indicated that a major source of discrepancies stems from how we model the solar corona. Thus,…

Solar and Stellar Astrophysics · Physics 2025-06-12 Satabdwa Majumdar , Martin Reiss , Karin Muglach , Charles N. Arge

In space weather studies and forecasting we employ magnetohydrodynamic (MHD) simulations which can provide rather accurate reconstruction of the solar wind dynamics and its evolution. However, all MHD simulations are restricted by the input…

Solar and Stellar Astrophysics · Physics 2023-06-14 G. M. Shaifullah , J. Magdalenic , C. Tiburzi , I. Jebaraj , E. Samara , P. Zucca