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Data mining is a popular concept of mined necessary data from a large set of data. Data mining using clustering is a powerful way to analyze data and gives prediction. In this paper non structural time series data is used to forecast daily…

数据库 · 计算机科学 2015-01-27 Ratul Dey Sanjay Chakraborty Lopamudra Dey

The solar coronal heating in quiet Sun (QS) and coronal holes (CH), including solar wind formation, are intimately tied by magnetic field dynamics. Thus, a detailed comparative study of these regions is needed to understand the underlying…

太阳与恒星天体物理 · 物理学 2022-02-23 Vishal Upendran , Durgesh Tripathi

(abridged) We investigate how the properties of the corona and solar wind in the open coronal holes depend on the properties of the magnetic fields and their footpoint motions at the surface, by perfoming 1D MHD simulations from the…

天体物理学 · 物理学 2015-06-24 Takeru K. Suzuki , Shu-ichiro Inutsuka

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…

太阳与恒星天体物理 · 物理学 2025-07-04 Markus J. Aschwanden

We investigate the geoeffective events happened from 8 to 20 Sept 2011, analysing the most plausible solar sources of these events, where coronal mass ejections and coronal holes play a fundamental role. The physical properties of the…

太阳与恒星天体物理 · 物理学 2014-01-09 J. Palacios , A. Guerrero , C. Cid , E. Saiz , Y. Cerrato

Meteorologists use shapes and movements of clouds in satellite images as indicators of several major types of severe storms. Satellite imaginary data are in increasingly higher resolution, both spatially and temporally, making it impossible…

计算机视觉与模式识别 · 计算机科学 2019-06-26 Xinye Zheng , Jianbo Ye , Yukun Chen , Stephen Wistar , Jia Li , Jose A. Piedra-Fernández , Michael A. Steinberg , James Z. Wang

Numerical models of the solar wind and coronal mass ejections (CMEs) utilize photospheric magnetic field observations to prescribe the inner boundary conditions for the plasma solutions. These magnetic field data are available to the…

太阳与恒星天体物理 · 物理学 2026-02-03 Nishtha Sachdeva , Zhenguang Huang , Gabor Toth , Hongfan Chen , Ward B. Manchester , Bart van der Holst

The acceleration of the young solar wind is studied using the first 17 encounters of Parker Solar Probe. We identify wind intervals from different source regions: coronal hole (CH) interiors, streamers, and low Mach number boundary layers…

太阳与恒星天体物理 · 物理学 2024-10-23 Yiming Jiao , Ying D. Liu , Wenshuai Cheng , Hao Ran , Rui Wang

Macrospicules (MS) are localised small-scale jet-like phenomena in the solar atmosphere, which have the potential to transport considerable amount of momentum and energy from the lower solar atmospheric regions to the Transition Region and…

太阳与恒星天体物理 · 物理学 2017-02-01 T. S. Kiss , N. Gyenge , R. Erdelyi

In order to efficiently analyse the vast amount of data generated by solar space missions and ground-base instruments, modern machine learning techniques such as decision trees, support vector machines (SVMs) and neural networks can be very…

太阳与恒星天体物理 · 物理学 2020-05-28 Teri Love , Thomas Neukirch , Clare E. Parnell

Solar flares are among the most powerful and dynamic events in the solar system, resulting from the sudden release of magnetic energy stored in the Sun's atmosphere. These energetic bursts of electromagnetic radiation can release up to…

太阳与恒星天体物理 · 物理学 2025-05-07 Julia Bringewald

We explore the capabilities of time-dependent (TD) magnetohydrodynamics (MHD) solar wind simulations with the coupled WSA model of the solar corona and GAMERA model of the inner heliosphere. We compare TD with steady state (SS) simulations…

太阳与恒星天体物理 · 物理学 2025-09-26 Evangelia Samara , Elena Provornikova , C. Nick Arge , Andrew McCubbin , Viacheslav G. Merkin

Clouds play an important role in the Earth's energy budget and their behavior is one of the largest uncertainties in future climate projections. Satellite observations should help in understanding cloud responses, but decades and petabytes…

大气与海洋物理 · 物理学 2022-11-15 Takuya Kurihana , Elisabeth Moyer , Ian Foster

The occlusion of the sun by clouds is one of the primary sources of uncertainties in solar power generation, and is a factor that affects the wide-spread use of solar power as a primary energy source. Real-time forecasting of cloud movement…

计算机视觉与模式识别 · 计算机科学 2024-09-19 Leron Julian , Haejoon Lee , Soummya Kar , Aswin C. Sankaranarayanan

The physical properties responsible for the formation and evolution of the corona and heliosphere are still not completely understood. 3D MHD global modeling is a powerful tool to investigate all the possible candidate processes. To fully…

The solar wind consists of continuous streams of charged particles that escape into the heliosphere from the Sun, and is split into fast and slow components, with the fast wind emerging from the interiors of coronal holes. Near the ecliptic…

太阳与恒星天体物理 · 物理学 2022-11-28 L. P. Chitta , D. B. Seaton , C. Downs , C. E. DeForest , A. K. Higginson

Precise localisation and characterization of active regions and coronal holes as observed by EUV imagers are crucial for a wide range of solar and helio-physics studies. We describe a segmentation procedure, the SPOCA-suite, that produces…

天体物理仪器与方法 · 物理学 2012-08-08 Véronique Delouille , Benjamin Mampaey , Cis Verbeeck , Ruben de Visscher

Inspired by the concept of relativity of simultaneity used in the theory of special relativity, a new approach is proposed to simulate future solar wind conditions at any point in the inner solar system. An important distinctive feature of…

太阳与恒星天体物理 · 物理学 2025-01-22 Igor V. Sokolov , Tamas I. Gombosi

The continuous stream of data available from the Atmospheric Imaging Assembly (AIA) telescopes onboard the Solar Dynamics Observatory (SDO) spacecraft has allowed a deeper understanding of the Sun. However, the sheer volume of data has…

太阳与恒星天体物理 · 物理学 2015-06-19 David M. Long , D. Shaun Bloomfield , Peter T. Gallagher , David Pérez-Suárez

Magnetic field couples the solar interior to the solar atmosphere, known as the corona. The coronal magnetic field is one of the crucial parameters which determines the coronal structures and regulates the space weather phenomena like…

太阳与恒星天体物理 · 物理学 2022-07-26 Devojyoti Kansabanik , Divya Oberoi , Surajit Mondal