Results 31 to 40 of about 15,881 (262)

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

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

On realistic size equivalence and shape of spheroidal Saharan mineral dust particles applied in solar and thermal radiative transfer calculations [PDF]

Atmospheric Chemistry and Physics, 2011
Realistic size equivalence and shape of Saharan mineral dust particles are derived from in-situ particle, lidar and sun photometer measurements during SAMUM-1 in Morocco (19 May 2006), dealing with measured size- and altitude-resolved axis ratio ...
S. Otto, T. Trautmann, M. Wendisch
doaj   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 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

Quantification of black carbon mixing state from traffic: implications for aerosol optical properties [PDF]

Atmospheric Chemistry and Physics, 2016
The climatic impacts of black carbon (BC) aerosol, an important absorber of solar radiation in the atmosphere, remain poorly constrained and are intimately related to its particle-scale physical and chemical properties.
M. D. Willis, R. M. Healy, R. M. Healy, R. M. Healy, N. Riemer, M. West, J. M. Wang, C.-H. Jeong, J. C. Wenger, G. J. Evans, J. P. D. Abbatt, A. K. Y. Lee   +11 more
doaj   +1 more source

Room‐Temperature Synthesis of Strongly Confined Lead Halide Perovskite Quantum Dots

Advanced Functional Materials, EarlyView.
CsPbX3${\rm CsPbX}_3$ lead halide perovskite quantum dots (QDs) are synthesized in a room‐temperature, five‐minute synthesis, yielding size‐controlled QDs with bright, tunable emission governed by reaction conditions and halide composition. A strongly binding ligand, OD‐PEA, ensures months‐long stability under ambient conditions and facilitates their ...
Anna Abfalterer, Yuzhen J. Zhou, Roshini Jayabalan, Julian Holzinger, Lukas M. Rescher, Rik Hooijer, Aladin Ullrich, Nina A. Henke, Immanuel Plangger, Erkan Aydin, Bert Nickel, Anne K. Schütz, Wolfgang Brütting, Alexander S. Urban   +13 more
wiley   +1 more source

Correlated Metal LaNiO3 as a p‐Type Transparent Conductor

Advanced Functional Materials, EarlyView.
p‐type transparent conducting oxides are needed to enable superstrate solar cell geometries with n‐type absorbers. The p‐type correlated metal LaNiO3 combines high optical transmission with low electrical resistivity and is compatible with a range of scalable deposition processes.
Shivang Beniwal, Emmeline G. Poole, Jacob Plowman, Troy D. Manning, Teresa Partida Manzanera, Kevin Sanderson, Matthew S. Dyer, Matthew J. Rosseinsky, Jonathan Alaria   +8 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

The relativistic solar particle event of May 17th, 2012 observed on board the International Space Station

Journal of Space Weather and Space Climate, 2014
High-energy charged particles represent a severe radiation risk for astronauts and spacecrafts and could damage ground critical infrastructures related to space services.
Berrilli Francesco, Casolino Marco, Del Moro Dario, Di Fino Luca, Larosa Marianna, Narici Livio, Piazzesi Roberto, Picozza Piergiorgio, Scardigli Stefano, Sparvoli Roberta, Stangalini Marco, Zaconte Veronica   +11 more
doaj   +1 more source