Results 11 to 20 of about 10,996 (218)

The Evolution of the 1/f Range within a Single Fast-solar-wind Stream between 17.4 and 45.7 Solar Radii

The Astrophysical Journal, 2023
The power spectrum of magnetic field fluctuations in the fast solar wind ( V _SW > 500 km s ^−1 ) at magnetohydrodynamic scales is characterized by two different power laws on either side of a break frequency f _b . The low-frequency range at frequencies
Nooshin Davis, B. D. G. Chandran, T. A. Bowen, S. T. Badman, T. Dudok de Wit, C. H. K. Chen, S. D. Bale, Zesen Huang, Nikos Sioulas, Marco Velli   +9 more
doaj   +1 more source

On Yaglom’s Law for the Interplanetary Proton Density and Temperature Fluctuations in Solar Wind Turbulence

Entropy, 2020
In the past decades, there has been an increasing literature on the presence of an inertial energy cascade in interplanetary space plasma, being interpreted as the signature of Magnetohydrodynamic turbulence (MHD) for both fields and passive scalars ...
Giuseppe Consolini, Tommaso Alberti, Vincenzo Carbone   +2 more
doaj   +1 more source

Polytropic Behavior in Corotating Interaction Regions: Evidence of Alfvénic Heating

The Astrophysical Journal Letters
Corotating interaction regions (CIRs) are recurring structures in the solar wind, characterized by interactions between fast and slow solar wind streams that compress and heat plasma. This study investigates the polytropic behavior of distinct regions in
M. A. Dayeh, M. J. Starkey, G. Livadiotis, S. T. Hart, A. A. Shmies, R. C. Allen, R. Bučik, H. A. Elliott   +7 more
doaj   +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

Cross Helicity and the Helium Abundance as an In Situ Metric of Solar Wind Acceleration

The Astrophysical Journal Letters
The two-state solar wind paradigm is based on observations showing that slow and fast solar wind have distinct properties like helium abundances, kinetic signatures, elemental composition, and charge-state ratios. Nominally, the fast wind originates from
B. L. Alterman, Raffaella D’Amicis
doaj   +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

On the Regulation of the Solar Wind Helium Abundance by the Hydrogen Compressibility

The Astrophysical Journal Letters
Traditionally, fast solar wind is considered to originate in solar source regions that are continuously open to the heliosphere. In contrast, slow solar wind is considered to originate in source regions that are only intermittently open to the ...
B. L. Alterman, Raffaella D’Amicis
doaj   +1 more source

Alfvénic solar wind intervals observed by Solar Orbiter: Exploiting the capability of the SWA plasma suite and source region investigation

Astronomy & Astrophysics
Context. Fast and slow solar wind have distinct properties linked to their solar sources. The Alfvénic slow wind complicates the usual classification by solar-wind speed, especially at intermediate speeds.
D’Amicis R., Raines J. M., Benella S., Panasenco O., Velli M., Nicolaou G., Owen C. J., Dewey R. M., Louarn P., Fedorov A., Lepri S. T., Alterman B. L., Perrone D., De Marco R., Bruno R., Sorriso-Valvo L., Dhamane O. S., Rivera Y., Kieokaew O. R., Verscharen D., Consolini G., Yardley S., Réville V., Telloni D., Baker D., Lewis G., Watson G., Anekallu C., Darwish K., Prech L., Livi S., Horbury T., Mele G., Fortunato V., Monti F.   +34 more
doaj   +1 more source

Advancing SafeWax, A Bio‐Inspired Superhydrophobic Coating, Toward Sustainable and Climate‐Resilient Crop Protection

Advanced Functional Materials, EarlyView.
This study advances SafeWax, a bio‐inspired, fatty‐acids‐based superhydrophobic coating, by identifying an agriculturally compliant solvent and revealing how solvent‐controlled Fatty acid crystallization governs the coating's microscopic structure and performance.
Niv Ben‐Arie, Iryna Polishchuk, Franziska Tauber, Coralie Schneider, Elena Prudnikov, Alessia Calora, Silvia Milita, Simona Fermani, Mireia Alejandra Ibanez Revert, Ilaria Filippetti, Claudio Ratti, Matthias Kellermeier, Markus Rueckel, Boaz Pokroy   +13 more
wiley   +1 more source

Investigation of Turbulent Fluctuations in the Fast and Alfvénic Slow Solar Wind at 1 au

The Astrophysical Journal
We study the turbulent modes present in the Alfvénic slow and fast solar wind. This analysis focuses on two solar wind intervals: 2022 January 26–29 and February 6–9, and it is based on wind observations at 1 au. Our study examined Alfvénic slow with β  
Monika Karki, Gary P. Zank, Laxman Adhikari, Ashok Silwal, Sujan Prasad Gautam, Prashrit Baruwal, Prashant Baruwal, Ismita Tasnim, Lingling Zhao, Alexander Pitňa   +9 more
doaj   +1 more source