Results 81 to 90 of about 11,108,449 (286)
The Astrophysical JournalWe study the evolution of electric currents during the emergence of magnetic flux in the solar photosphere and the differences exhibited between solar active regions of different Hale complexity classes. A sample of 59 active regions was analyzed using a
Ioannis Kontogiannis +1 more
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The Magnetic Fields at Different Levels in the Active Regions of the Solar Atmosphere [PDF]
Symposium - International Astronomical Union, 1971 The strengths of the longitudinal magnetic fields recorded at different depths of active regions with a double magnetograph of the Crimean Astrophysical Observatory are compared.The recordings of the magnetic fields were made in the lines Fe Iλ5250Å, Ca Iλ6103Å, Na I D1, BIIλ4554Å, Mg Iλ5184Å, Hα, Hγ, Hδ.It is shown, that there is a close correlation ...
openaire +1 more source
Magnetic fields on young, solar-type stars [PDF]
, 2013 This thesis describes an investigation aimed at using spectropolarimetric observations of the magnetic fields of young solar-type stars to improve the understanding of the early development of solar and stellar dynamos and activity cycles.
Waite, Ian
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Advanced Science, EarlyView.As CMOS technology approaches fundamental energy limits, new paradigms for low‐power information processing are required. Magnetic systems are attractive for their spin transport, yet current‐induced magnetization control is energy inefficient. Multiferroic heterostructures enable energy‐efficient electric field manipulation of magnetism.
Donghyeon Lee +3 more
wiley +1 more source
Advanced Science, EarlyView.Polymer‐based hydrogels have emerged as promising materials for atmospheric water harvesting (AWH) due to their high water affinity, tunable network structure, and excellent moisture adsorption‐desorption performance. Functional hydrogel systems enable efficient water capture and controlled release under low‐energy conditions, offering a sustainable ...
Swagata Datta +6 more
wiley +1 more source
Advanced Science, EarlyView.Hybrid electro‐thermochromic smart windows are developed for dynamic climate control by integrating a redox‐matched black electrochromic gel with a paraffin‐based thermochromic film. This synergistic combination enables multimodal solar modulation, where photothermal heating from the electrochromic layer triggers thermochromic activation at lower ...
Xilu Wu +12 more
wiley +1 more source
Effect of Solar Activity Regions on the Interplanetary Magnetic Field.
The Astrophysical Journal, 1963 A correlation between the solar activity regtons and the Pioneer V interplanetary magnetic field measurements is presented for the months February through May, 1960. The usual 27-day coronal periodicity can be seen in this interval. The corresponding vaiues of coronal index and field magnitude are plotted against each other and the ratio of the field ...
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Advanced Science, EarlyView.Multiscale phase segregation in block copolymers enables spatially deterministic structuring from molecular to macroscopic scales, decoupling solar scattering and infrared emission for augmented radiative cooling. ABSTRACT Passive radiative cooling, which reflects solar irradiation while emitting heat through the atmospheric window, provides a ...
Mingxin Feng +10 more
wiley +1 more source
Angewandte Chemie, EarlyView.An in situ crystalline/amorphous Bi19Br3S27/NiSx interface unlocks orbital hybridization‐driven CO2 conversion. Newly formed p‐d coupling reshapes the reaction pathway, promotes C─C coupling, and steers photo‐thermal CO2 reduction toward highly selective C2H4 production.
Guangmei Gan +6 more
wiley +2 more sources
MHD simulations of coronal heating [PDF]
, 2015 The problem of heating the solar corona requires the conversion of magnetic energy into thermal energy. Presently, there are two promising mechanisms for heating the solar corona: wave heating and nanoflare heating.
Tam, Kuan V.
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