Results 51 to 60 of about 1,653 (191)

Spacecraft potential control aboard Equator-S as a test for Cluster-II [PDF]

Annales Geophysicae, 1999
The payload of Equator-S was complemented by the potential control device (PCD) to stabilise the electric potential of the spacecraft with respect to the ambient plasma. Low potentials are essential for accurate measurements of the thermal plasma. The
K. Torkar, K. Torkar, W. Riedler, M. Fehringer, F. Rüdenauer, C. P. Escoubet, H. Arends, B. T. Narheim, K. Svenes, M. P. McCarthy, G. K. Parks, R. P. Lin, H. Rème   +12 more
doaj   +1 more source

Conjugate observations of quasi‐periodic emissions by Cluster and DEMETER spacecraft [PDF]

Journal of Geophysical Research: Space Physics, 2013
AbstractQuasi‐periodic (QP) emissions are electromagnetic emissions at frequencies of about 0.5–4 kHz that are characterized by a periodic time modulation of the wave intensity. Typical periods of this modulation are on the order of minutes. We present a case study of a large‐scale long‐lasting QP event observed simultaneously on board the DEMETER ...
Němec, F., Santolík, O., Parrot, Michel, Pickett, J. S., Hayosh, M., Cornilleau-Wehrlin, Nicole   +5 more
openaire   +4 more sources

Electrolyte Design Strategies for High‐Energy‐Density Li/Na/K‐Metal Batteries Toward Grid‐Scale Energy Storage: From Liquid to Solid

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review summarizes key parameters including cathode loading and electrolyte consumption, clarifies the practical application scope of alkali metal batteries, and research progress on advanced electrolytes for grid‐scale energy storage systems. The growing demand for grid‐scale battery energy storage systems (BESSs) has prompted researchers to turn ...
Hui Shao, Zhiwei Ni, Jinkui Feng
wiley   +1 more source

Detection of meteoroid hypervelocity impacts on the Cluster spacecraft: First results [PDF]

Journal of Geophysical Research: Space Physics, 2017
AbstractWe present the first study of dust impact events on one of the Earth‐orbiting Cluster satellites. The events were identified in the measurements of the wide band data (WBD) instrument on board the satellite operating in monopole configuration. Since 2009 the instrument is operating in this configuration due to the loss of three electric probes ...
Jakub Vaverka, Asta Pellinen‐Wannberg, Johan Kero, Ingrid Mann, Alexandre De Spiegeleer, Maria Hamrin, Carol Norberg, Timo Pitkänen   +7 more
openaire   +3 more sources

Experimental Factors and Techniques for Pool Boiling Heat Transfer Enhancement: A Critical Review

Heat Transfer, EarlyView.
ABSTRACT This review presents a comprehensive assessment of active strategies for enhancing pool boiling heat transfer, with a focus on techniques that do not rely solely on the boiling surface modification. It examines a broad range of methodologies including fluid additives, external fields, mechanical interventions, and thermal‐geometric tuning that
José E. Pereira, R. R. Souza, A. S. Moita   +2 more
wiley   +1 more source

First Cluster results of the magnetic field structure of the mid- and high-altitude cusps [PDF]

Annales Geophysicae, 2001
Magnetic field measurements from the four Cluster spacecraft from the mid- and high-altitude cusp are presented. Cluster underwent two encounters with the mid-altitude cusp during its commissioning phase (24 August 2000). Evidence for field-aligned
P. J. Cargill, M. W. Dunlop, A. Balogh, the FGM team   +3 more
doaj   +1 more source

Predicting Infrared Optical Properties of Materials Using Machine Learning Interatomic Potentials

Materials Genome Engineering Advances, EarlyView.
This work proposes a new fast computing framework for infrared reflectance spectra, MTP‐FIRE, based on machine learning potential, which can achieve the same accuracy as the existing first‐principles calculation, but can be two orders of magnitude faster on average.
Lianduan Zeng, Xiao Zhou, Xinxi Lu, Li Huang, Lan Yang, Lihao Wang, Gang Liu, Zhongyang Wang, Tongxiang Fan   +8 more
wiley   +1 more source

Data-driven Uncertainty Quantification of the Wave Telescope Technique: General Equations and Demonstration Using HelioSwarm

The Astrophysical Journal Supplement Series, 2023
The upcoming NASA mission HelioSwarm will use nine spacecraft to make the first simultaneous multipoint measurements of space plasmas spanning multiple scales.
T. Broeren, K. G. Klein
doaj   +1 more source

All‐sky assimilation impacts of the Tomorrow.io microwave sounder constellation on global weather forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Key Findings: An assimilation methodology is established for the Tomorrow.io microwave sounder (TMS) flying on CubeSats in sun‐synchronous and inclined orbits, and in all cloud scenes. The TMS has a significant impact on weather forecast lead times up to 3 days in the Tropics in a research‐quality numerical weather prediction setting, and yields water ...
Jonathan J. Guerrette, Ryan Honeyager, Stephen Joseph Munchak, Xiaoxu Tian   +3 more
wiley   +1 more source

Observations of the cusp region under northward IMF [PDF]

Annales Geophysicae, 2001
We present a comparative study of the cusp region using the EISCAT Svalbard Radars (ESR) and the Cluster spacecraft. We focus in this paper on 2 February 2001, over the time period from 07:30 UT to 12:00 UT when the oblique ESR antenna pointing ...
F. Pitout, F. Pitout, J.-M. Bosqued, D. Alcaydé, W. F. Denig, H. Rème   +5 more
doaj   +1 more source