Results 21 to 30 of about 7,080,768 (301)

The passband integration properties of Birefringent filter

Scientific Reports, 2021
In this article, we discuss an observation phenomenon where the total amount of photons in the full passband of the Birefringent filter is a constant number that is considered by removing the spectrum of the light source irrespective of the instrument ...
Xiaofan Wang, Mikhail Leonidovich Demidov, Yuanyong Deng, Haiying Zhang   +3 more
doaj   +1 more source

JW-FD: A 15-Year Multimodal Dataset for Solar Flare Forecasting

Universe
Solar flares drive severe space weather hazards, and forecasting their occurrence remains a central challenge for both heliophysics and operational space weather services.
Mingfu Shao, Jiaben Lin, Hui Wang, Liyue Tong, Chen Yang, Yin Zhang, Yuyang Li   +6 more
doaj   +1 more source

Solar activity

Eos, Transactions American Geophysical Union, 1991
Perhaps the most newsworthy item of recent times concerning solar activity is its unprecedented strength during the rising phase of its current 11‐year cycle. Examples of its potency include a major, well‐observed solar flare in March 1989 that launched an unusually powerful blast wave that, hitting Earth, caused spectacular low‐latitude auroras and ...
openaire   +1 more source

The Revised Sunspot Record in Comparison to Cosmogenic Radionuclide-Based Solar Activity Reconstructions [Elektronisk resurs]

, 2016
Recent revisions in the sunspot records illustrate the challenges related to obtaining a 400-year-long observational record of past solar-activity changes.
Muscheler, Raimund,, Nilsson, Andreas,, Adolphi, Florian,, Lund University., Herbst, Konstantin,   +4 more
core   +1 more source

Linking long-term switchback variability at 1 au to solar-surface mechanisms: A 27-year statistical study

Astronomy & Astrophysics
Context. Switchbacks–transient, large-angle deflections of the interplanetary magnetic field–pervade the solar wind, yet their origin remains disputed. Current ex situ theories, notably coronal jets and interchange reconnection, are typically tested on ...
Dai Fanzhuo, Li Hui, Jiang Wence, Zhang Minghui, Li Haoyu, Wang Chi   +5 more
doaj   +1 more source

A nominally confined X6.4 flare associated with an extremely faint coronal mass ejection

Astronomy & Astrophysics
Context. The observational distinction between eruptive and confined solar flares is often based on whether a coronal mass ejection (CME) can be identified in coronagraph data.
Lin Wei, Zhou Guiping, Hou Yijun, Gao Changliang, Zhang Xiaofan, Wang Jingxiu   +5 more
doaj   +1 more source

Geomagnetic storms driven by ICME- and CIR-dominated solar wind. [PDF]

, 2006
The interaction of the solar wind and the Earth's magnetosphere is complex and the phenomenology of the interaction is very different for solar wind dominated by interplanetary coronal mass ejections (ICMEs) compared to solar wind dominated by corotating
Liemohn, M. W., Zhang, J. C., Skoug, R. M., McPherron, R. L., Borovsky, Joseph E., Denton, Michael H., Henderson, M. G., Lavraud, B., Thomsen, M. F.   +8 more
core   +4 more sources

Introduction to special issue on high speed solar wind streams and geospace interactions (HSS-GI) [PDF]

, 2009
This special issue of the Journal of Atmospheric and Solar-Terrestrial Physics is devoted to research into high speed solar wind streams (HSSs) and their effects on the region of near-Earth space commonly known as ‘geospace’.
Morley, S.K., Denton, M.H, Horne, Richard B, Borovsky, J.E., Tsurutani, B.T., Denton, M.H., Horne, R.B., McPherron, R.L.   +7 more
core   +1 more source

Influence of Particle Shape and Size in Copper‐Based Low‐Temperature Metallization Paste for Solar Cells

Advanced Engineering Materials, EarlyView.
Particle morphology controls the balance between printability and electrical connectivity in low‐temperature AgCu/Ag metallization pastes. Flake‐shaped AgCu particles form extended low‐resistance contacts, whereas spherical particles favor processability at high metal loading. Fine Ag particles further tune void filling and conductive‐network formation
O. Mhirsi, M. N. Wengenmeyr, J. Bartsch, B. E. Rapp   +3 more
wiley   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source