Results 41 to 50 of about 3,053,596 (287)

Statistical Relationship between Long-duration High-energy Gamma-Ray Emission and Solar Energetic Particles

The Astrophysical Journal, 2023
Abstract Large solar eruptions are often associated with long-duration γ-ray emission extending well above 100 MeV. While this phenomenon is known to be caused by high-energy ions interacting with the solar atmosphere, the underlying dominant acceleration process remains under debate.
A. Bruno, G. A. de Nolfo, J. M. Ryan, I. G. Richardson, S. Dalla   +4 more
openaire   +3 more sources

The Observation of 10–50 KeV Solar Flare X-rays by the OGO Satellites and their Correlation with Solar Radio and Energetic Particle Emission [PDF]

Symposium - International Astronomical Union, 1968
More than 70 cases have been observed of energetic solar flare X-ray bursts by large ionization chambers on the OGO satellites in space. The ionization chambers have an energy range between 10 and 50 KeV for X-rays and are also sensitive to solar protons and electrons.
R. L. Arnoldy, S. R. Kane, J. R. Winckler   +2 more
openaire   +2 more sources

Solar energetic particle events: phenomenology and prediction

, 2002
Solar energetic particle events can cause major disruptions to the operation of spacecraft in earth orbit and outside the earth's magnetosphere and have to be considered for EVA and other manned activities. They may also have an effect on radiation doses
Patrick, G.J., Patrick, G., G. J. Patrick, Gabriel, S.B., S. B. Gabriel   +4 more
core   +1 more source

Impulsive Solar Flares in the Parker Solar Probe Era. I. Low-energy Electron, Proton, and Alpha Beams

The Astrophysical Journal
Multiple instruments on board the Parker Solar Probe spacecraft have detected signatures of impulsive electron and ion beam events over the course of the first 20 encounters.
S. T. Alnussirat, D. E. Larson, R. Livi, P. L. Whittlesey, A. Rahmati, O. Romeo, J. Huang, Mingzhe Liu, M. Pulupa, S. D. Bale, N. Raouafi, D. J. McComas   +11 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Solar Energetic Particle Events with Extremely High 3He Content Observed by Solar Orbiter

The Astrophysical Journal
We performed a survey of ^3 He-rich events using observations from the Suprathermal Ion Spectrograph on the Solar Orbiter mission from 2020 to 2024. We identified 57 ^3 He-rich events, each showing clear ^3 He enhancements above the background and ^3 He/
A. Kouloumvakos, G. M. Mason, G. C. Ho, R. C. Allen, J. Rodriguez-Pacheco, R. F. Wimmer-Schweingruber   +5 more
doaj   +1 more source

Tuning the Optoelectronic Properties of Wide Bandgap Perovskites: Data‐Driven Insights from Combinatorial Synthesis and High‐Throughput Experimentation

Advanced Functional Materials, EarlyView.
Combinatorial vapor deposition enables independent tuning of Cs/Pb and Br/Cl in wide‐bandgap perovskites. Automated multimodal mapping of 500+ compositions reveals a high‐energy optical transition that correlates with enhanced photoluminescence, defining a practical Cs/Pb window.
Alexander Wieczorek, Sergey Tsarev, Nathan Rodkey, Oleksandr Pshyk, Stefanie Frick, Maksym V. Kovalenko, Sebastian Siol   +6 more
wiley   +1 more source

Time distributions of solar energetic particle events: Are SEPEs really random?

, 2009
Solar energetic particle events (SEPEs) can exhibit flux increases of several orders of magnitude over background levels and have always been considered to be random innature in statistical models with no dependence of any one event on the occurrence of ...
Jiggens, P.T.A., Gabriel, S.B.
core   +1 more source

Designing Vanadium‐Based Oxide Electrocatalysts for Water Splitting: Experimental and Mechanistic Insights with Machine Learning

Advanced Functional Materials, EarlyView.
This review establishes structure‐property‐mechanism relationships across six modification strategies for V‐based oxide water‐splitting electrocatalysts: lattice engineering, heteroatom doping, interface engineering, carbon‐based hybridization, morphology engineering, and surface reconstruction and pre‐catalyst design, where dissolution is reframed as ...
Youness El Issmaeli, Amina Lahrichi, Hoje Chun, Rafael Gómez‐Bombarelli, Bruno G. Pollet   +4 more
wiley   +1 more source

Detection of Radio Emission from Superflaring Solar-type Stars in the VLA Sky Survey

The Astrophysical Journal
Solar-type stars have been observed to flare at optical wavelengths with energies much higher than is observed for the Sun. To date, no counterparts have been observed at longer wavelengths.
Ivey Davis, Gregg Hallinan, Carlos Ayala, Dillon Dong, Steven Myers   +4 more
doaj   +1 more source