Results 41 to 50 of about 552,904 (341)

Fractionation of the Solar Wind [PDF]

Highlights of Astronomy, 1995
The composition of the solar wind (SW) is not a true sample of the solar composition, but it is fractionated with respect to the solar photosphere. This fractionation follows the well-known first ionization potential (FIP) pattern: When plotting the SW abundances with respect to the solar abundances as a function of FIP, a step function is obtained ...
openaire   +2 more sources

The Relationship Between Solar Wind Dynamic Pressure Pulses and Solar Wind Turbulence

Frontiers in Physics, 2021
Solar wind dynamic pressure pulses (DPPs) are small-scale plasma structures with abrupt and large-amplitude plasma dynamic pressure changes on timescales of seconds to several minutes.
Mengsi Ruan, Pingbing Zuo, Zilu Zhou, Zhenning Shen, Yi Wang, Xueshang Feng, Chaowei Jiang, Xiaojun Xu, Jiayun Wei, Yanyan Xiong, Ludi Wang   +10 more
doaj   +1 more source

Solar and Stellar Winds [PDF]

Highlights of Astronomy, 1989
AbstractThis review discusses winds from stars with hot outer atmospheres, stars with coronae similar to the sun. It illustrates how solar observations can be used to test a theoretical model for solar-stellar winds, and thereby provide some insights concerning applications to studying winds from stars other than the sun.
openaire   +2 more sources

Magnetospheric Cavity Modes Driven by Solar Wind Dynamic Pressure Fluctuations

, 2010
We present results from Lyon-Fedder-Mobarry (LFM) global, three-dimensional magnetohydrodynamic (MHD) simulations of the solar wind-magnetosphere interaction.
Han, Jacobs, Kepko, Kivelson, Korotova, Lyon, M. K. Hudson, M. Wiltberger, Matsuoka, S. G. Claudepierre, S. R. Elkington, Sibeck, Viall, W. Lotko, Wiltberger, Wright   +15 more
core   +1 more source

Lithium-6 from Solar Flares [PDF]

, 2000
By introducing a hitherto ignored Li-6 producing process, due to accelerated He-3 reactions with He-4, we show that accelerated particle interactions in solar flares produce much more Li-6 than Li-7.
Benzion Kozlovsky, J. P. Thibaud, Mandzhavidze N., Murphy R. J., Natalie Mandzhavidze, Ramaty R., Reames D. V., Reuven Ramaty, Ritzenhoff S., Vincent Tatischeff   +9 more
core   +2 more sources

Effect of multi-donor doping on structure and electrical properties of DC ZnO varistor ceramics

Cailiao gongcheng, 2022
Direct-current ZnO varistor ceramic samples were prepared by traditional ceramic sintering process with B2O3, In2O3 and Al2O3multi-donor doping. The effects of B2O3 doping ratio (0.1%-0.4%, molar fraction) on the microstructure and electrical properties ...
CHENG Kuan, ZHAO Hongfeng, ZHOU Yuanxiang   +2 more
doaj   +1 more source

Multimode Adaptive Thermoregulation Enabled by Shape Morphing and Radiative Cooling Porous Polyurethane

Advanced Engineering Materials, EarlyView.
A shape‐morphing, porous polyurethane film combines passive radiative cooling with folding to deliver multilevel heating‐and‐cooling control. High solar reflectance and midinfrared emissivity keep surfaces up to 3.5 °C cooler in direct sunlight, while photothermal triggering folds the film to absorb solar heat.
Yoon Young Choi, Songtao Tang, Ho Kun Woo, Kai Zhou, Pranto Karua, Lili Cai   +5 more
wiley   +1 more source

Constraining Low-Frequency Alfvenic Turbulence in the Solar Wind Using Density Fluctuation Measurements

, 2009
One proposed mechanism for heating the solar wind, from close to the sun to beyond 10 AU, invokes low-frequency, oblique, Alfven-wave turbulence. Because small-scale oblique Alfven waves (kinetic Alfven waves) are compressive, the measured density ...
Axford, Benjamin D. G. Chandran, Beresnyak, Beresnyak, Celnikier, Celnikier, Chandran, Chandran, Chandran, Cranmer, Cranmer, Cranmer, Cranmer, Czechowski, Dmitruk, Dmitruk, Dobrowolny, Eliot Quataert, Fisher, Fisk, Galeev, Grappin, Gregory G. Howes, Heyvaerts, Hollweg, Iroshnikov, Kellogg, Kohl, Lithwick, Lithwick, Lithwick, Markovskii, Maron, Marsch, Marsch, Matthaeus, Peera Pongkitiwanichakul, Podesta, Qian Xia, Quataert, Quataert, Ruzmaikin, Schekochihin, Stix, Velli, Verdini, Verdini   +46 more
core   +1 more source

Can the Solar Wind be Driven by Magnetic Reconnection in the Sun's Magnetic Carpet? [PDF]

, 2010
The physical processes that heat the solar corona and accelerate the solar wind remain unknown after many years of study. Some have suggested that the wind is driven by waves and turbulence in open magnetic flux tubes, and others have suggested that ...
Adriaan A. van Ballegooijen, Amari, Antiochos, Antiochos, Aschwanden, Axford, Baker, Banaszkiewicz, Berger, Beveridge, Bruno, Bryans, Buchlin, Cadavid, Cairns, Camporeale, Cranmer, Cranmer, Cranmer, Cranmer, Crouch, De Pontieu, De Rosa, Edmondson, Edmondson, Fang, Feldman, Fisk, Giacalone, Goldbaum, Gudiksen, Guglielmino, Hagenaar, Hagenaar, Hagenaar, Hagenaar, Hagenaar, Hansteen, Harra, Hollweg, Isobe, Ito, Jiang, Keller, Kubo, Lionello, Lites, Livi, Longcope, Longcope, Lynch, Lynch, Martínez González, Matsumoto, Matthaeus, Moreno-Insertis, Morita, Nicol, Pariat, Parnell, Peter, Press, Priest, Pucci, Rast, Regnier, Rieutord, Savcheva, Schrijver, Schrijver, Schrijver, Schwadron, Scullion, Shibata, Shimojo, Shimojo, Shimojo, Simon, Simon, Stein, Steven R. Cranmer, Sánchez Almeida, Title, van Ballegooijen, van Ballegooijen, Verdini, Wang, Wang, Wang, Welsch, Yeates, Zhang   +91 more
core   +1 more source

Efficient and Scalable Radiative Cooling for Photovoltaics Using Solution‐Processable and Solar‐Transparent Mesoporous Nanoparticles

Advanced Functional Materials, EarlyView.
Graded refractive index (GRI) structures are prepared from the layer‐by‐layer spray coating of the mesoporous SiO2 nanoparticles, showing high solar transparency and thermal emissivity. Under outdoor conditions, after 50 days, the GRI‐coated photovoltaics show on average 6.65 ± 1.48 °C lower than that of the non‐coated references, maintaining 80.9 ± 8 ...
Heesuk Jung, Sung Yoon Min, Byungsoo Kang, Yongseok Yoo, Jihun Jang, Yeoun‐Woo Jang, Hyojeong Choi, Hyeong Won Lee, Swarup Biswas, Yongju Lee, Mansoo Choi, Phillip Lee, Min Seok Jang, Hyeok Kim, Shu Yang   +14 more
wiley   +1 more source