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Heliospheric Effect on Solar Activity Parameters during Maximum Phase of Solar Cycle 24(2012–2015): 《Research in Astronomy and Astrophysics》2024年第12期1-10,共10页P.R.Singh Upendra Kr.Singh Kushwaha A.K.Singh T.K.Pant; The time series of daily data on solar activity proxies, namely the sunspot number(SSN), sunspot area(SSA), solar radio flux(F10.7), modified coronal index(MCI), solar flare index(FI), and cosmic ray intensity(CRI), w...; 关键词：SUN activity-Sun flares-Sun heliosphere-Sun rotation-(Sun) SUNSPOTS

The Dependence between Solar Flare Emergence and the Average Background Solar X-Ray Flux Emission: 《International Journal of Astronomy and Astrophysics》2024年第3期149-161,共13页Yael Peleg Rami Babayew Itzhak Orion; Solar flares, sudden bursts of intense electromagnetic radiation from the Sun, can significantly disrupt technological infrastructure, including communication and navigation satellites. To mitigate these risks, accura...; 关键词：Space Weather Solar Flare Solar Activity SUNSPOTS Solar Cycle

Sunspot Group Detection and Classification by Dual Stream Convolutional Neural Network Method: 《Research in Astronomy and Astrophysics》2024年第9期248-259,共12页Nyasha Mariam Mkwanda Weixin Tian Junlin Li; The automatic detection and analysis of sunspots play a crucial role in understanding solar dynamics and predicting space weather events.This paper proposes a novel method for sunspot group detection and classificatio...; 关键词：Sun:magnetic fields Sun:flares (Sun:)sunspots DSCNN Attention mechanism Edge dimming

Astral Actions on Allais’ Pendulum Apparently Inexplicable by Classical Factors: A Point of the Situation: 《Journal of Modern Physics》2024年第9期1375-1408,共34页Jean-Bernard Deloly; 1) The observation by Allais of the precession of pendulums from 1954 to 1960 highlighted regularities of astral origin an in-depth analysis of which showed that, apparently, no classical phenomenon can explain them. ...; 关键词：Allais Effect PENDULUM Lunisolar Influence Jupiter Influence Lunar and Solar Eclipses SYZYGIES SUNSPOTS Solar Cycles

A Comparison of Co-temporal Vector Magnetograms Obtained with HMI/SDO and SP/Hinode: 《Research in Astronomy and Astrophysics》2023年第12期175-183,共9页Mei Zhang Haocheng Zhang Chengqing Jiang; supported by the National Natural Science Foundation of China(NSFC,grant No.11973056);the National Key R&D Program of China(grant No.2021YFA1600500)。; Accurate measurement of magnetic fields is very important for understanding the formation and evolution of solar magnetic fields.Currently,there are two types of solar magnetic field measurement instruments:filter-bas...; 关键词：The Sun-Sun magnetic fields-Sun photosphere-(Sun:)sunspots

Research Progress on Solar Flare Forecast Methods Based on Data-driven Models被引量：2: 《Research in Astronomy and Astrophysics》2023年第6期12-27,共16页Ke Han Meng-Yao Yu Jun-Feng Fu Wen-Bin Ling De-quan Zheng Jie Wan Peng E; the support of the National Key Research and Development Program of China(No.2022YFA1604600);the National Natural Science Foundation of China(NSFC,Grant No.11975086)。; Eruption of solar flares is a complex nonlinear process,and the rays and high-energy particles generated by such an eruption are detrimental to the reliability of space-based or ground-based systems.So far,there are n...; 关键词：Sun:activity Sun:flares (Sun:)sunspots Sun:magnetic fields

Flare Forecast Model Based on DS-SMOTE and SVM with Optimized Regular Term被引量：2: 《Research in Astronomy and Astrophysics》2023年第6期38-46,共9页Jie Wan Jun-Feng Fu Ren-Qing Wen Ke Han Meng-Yao Yu Peng E; the support of the National Key Research and Development Program of China(No.2022YFF0503601);the National Natural Science Foundation of China(No.11975086)。; The research of flare forecast based on the machine learning algorithm is an important content of space science.In order to improve the reliability of the data-driven model and weaken the impact of imbalanced data set...; 关键词：Sun:flares Sun:magnetic fields Sun:X-rays GAMMA-RAYS (Sun:)sunspots

Variation of Small Scale Magnetic Fields Over a Century using Ca-K Images as Proxy: 《Research in Astronomy and Astrophysics》2023年第4期172-183,共12页Jagdev Singh Muthu Priyal B.Ravindra Luca Bertello Alexei Pevtsov; supported by the International Space Science Institute (ISSI),Bern,Switzerland and ISSI-Beijing,China。; A combined uniform and long-time series of Ca-K images from the Kodaikanal Observatory,Mount Wilson Observatory and Mauna Loa Solar Observatory was used to identify and study the Ca-K small-scale features and their so...; 关键词：SUN activity-Sun chromosphere-(Sun:)sunspots

Periodicities in Solar Activity, Solar Radiation and Their Links with Terrestrial Environment: 《Natural Science》2023年第3期111-147,共37页Valentina V. Zharkova Irina Vasilieva Simon J. Shepherd Elena Popova; Solar magnetic activity is expressed via variations of sunspots and active regions varying on different timescales. The most accepted is an 11-year period supposedly induced by the electromagnetic solar dynamo mechani...; 关键词：Sun: Magnetic Field Sun: Solar Activity Sun: Sunspots Sun: Solar Dynamo

The Decay Process of an α-configuration Sunspot: 《Research in Astronomy and Astrophysics》2023年第2期73-81,共9页Yang Peng Zhi-Ke Xue Xiao-Li Yan Aimee ANorton Zhong-Quan Qu Jin-Cheng Wang Zhe Xu Li-Heng Yang Qiao-Ling Li Li-Ping Yang Xia Sun; supported by the National Natural Science Foundation of China(11973084,11873087,12003066 and 11527804);Yunnan Key Laboratory of Solar Physics and Space Science under number 202205AG070009;Yunnan Science Foundation of China under number:202201AT070194;Youth Innovation Promotion Association,CAS(No.2019061);CAS“Light of West China”Program;Yunnan Science Foundation for Distinguished Young Scholars(No.202001AV070004);Key Research and Development Project of Yunnan Province under number 202003AD150019;Young Elite Scientists Sponsorship Program by YNAST.9。; The decay of sunspot plays a key role in magnetic flux transportation in solar active regions(ARs).To better understand the physical mechanism of the entire decay process of a sunspot,an α-configuration sunspot in AR...; 关键词：SUN atmosphere-Sun magnetic fields-(Sun:)sunspots

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