Results 91 to 100 of about 2,651 (210)

Auroral streamers and magnetic flux closure [PDF]

, 2007
peer reviewedOn 7 December 2000 at 2200 UT an auroral streamer was observed to develop above Scandinavia with the IMAGE-FUV global imagers. The ionospheric equivalent current deduced from the MIRACLE-IMAGE Scandinavian ground-based network of ...
Kauristie, K., Hubert, Benoît, Hubert, B., Milan, S. E., S. W. H. Cowley (7590302), Steve E. Milan (7589666), Grocott, A., Adrian Grocott (7590026), Pulkkinen, T. I., Cowley, S. W. H., B. Hubert (7590023), O. Amm (7591346), K. Kauristie (7591778), Amm, O., T. I. Pulkkinen (7591781)   +14 more
core   +1 more source

Coupling Selective Organic Oxidation With Hydrogen Evolution Over Metal Halide Perovskite Photocatalysts: Halide‐Dependent Design, Mechanisms, and Stability Challenges

EcoEnergy, EarlyView.
This Review highlights how metal halide perovskites enable coupled selective organic oxidation and hydrogen evolution under visible light. It summarizes halide‐dependent design principles, surface engineering strategies, reaction mechanisms, and stability challenges, providing guidance for developing efficient and durable photocatalytic systems ...
Jutarat Jitrada, Lizhen Liu, Patchanita Thamyongkit, Yanfa Yan, Jun Huang   +4 more
wiley   +1 more source

Frequency comb metrology at PHz frequencies: Precision in the extreme ultraviolet [PDF]

, 2011
The capability of frequency-comb (FC) lasers to precisely measure optical frequencies is extended to the multiple-PHz domain. This frequency region, which covers the extreme ultraviolet (XUV, wavelengths shorter than 100 nm), was previously not ...
Eikema, K. S E, D. Z. Kandula, Morgenweg, J., Gohle, Ch, K. S. E. Eikema, Ubachs, W.; id_orcid, Barmes, I., I. Barmes, Pinkert, T. J., Kandula, D. Z., Ubachs, W., T. J. Pinkert, J. Morgenweg, Ch. Gohle, W. Ubachs   +14 more
core   +1 more source

easyspec: An Open-source Python Package for Long-slit Spectroscopy

The Astronomical Journal
In modern-day astronomy, near-infrared, optical, and ultraviolet spectroscopy are indispensable for studying a wide range of phenomena, from measuring black hole masses to analyzing chemical abundances in stellar atmospheres.
Raniere de Menezes, Francesco Massaro, Michela Negro, Claudia M. Raiteri, Harold Peña-Herazo, Jose A. Acosta-Pulido   +5 more
doaj   +1 more source

Synergistic Engineering of Oxygen Vacancies and Topological Surface States in Bi2Te3/TiO2‐X Heterostructures for Highly Efficient Photothermal‐Driven CO2 Photoreduction

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Integrating the topological insulator Bi2Te3 with oxygen‐deficient TiO2‐X creates a synergistic platform for full‐spectrum CO2 reduction, achieving high‐selectivity C2+ production via enhanced photothermal catalysis and tailored charge dynamics.
Bingke Zhang, Chenchen Zhao, Jing Qiao, Changcun Li, Yang Wang, Xingshuo Liu, Dongbo Wang, Gang Liu, Zhao Qian, Rajeev Ahuja, Jinzhong Wang, Degang Zhao   +11 more
wiley   +1 more source

First results from high redshift quasar searches in VIKING [PDF]

, 2012
This thesis presents the discovery of the first luminous z & 6.5 quasars in the VISTA kilo-degree Infrared Galaxy Survey (VIKING). After some basic quality control, quasar selection is investigated via use of initial data supplementedwith ...
Findlay, Joseph
core  

Near-ultraviolet Excess in Slowly Accreting T Tauri Stars: Limits Imposed by Chromospheric Emission [PDF]

, 2011
Young stars surrounded by disks with very low mass accretion rates are likely in the final stages of inner disk evolution and therefore particularly interesting to study.
Johns-Krull, C., Catherine Espaillat, Abgrall, H., Yang, Hao, Gaitee Hussain, Christopher Johns-Krull, Ingleby, Laura, Bergin, Edwin, France, K., Alexander, Richard D., Joanna Brown, Edwin Bergin, Walter, Frederick M., Roueff, E., Calvet, Nuria, Bergin, Edwin A., Herczeg, G., France, Kevin, Gregory Herczeg, Scott G. Gregory, Frederick Walter, Suzan Edwards, Espaillat, Catherine, Espaillat, Catherine C., Brown, Joanna, Hao Yang, Evelyne Roueff, Jeffrey Linsky, Walter, Frederick, Ingleby, L., Bethell, Thomas, David Ardila, McClure, Melissa, Johns-Krull, Christopher M., Yang, H., Alexander Brown, McClure, M., Gregory, Scott G.; id_orcid, Hussain, Gaitee, Brown, Alexander, Richard Alexander, Hussain, G., Linsky, J., Valenti, Jeff, Gregory, S., Edwards, S., Linsky, Jeffrey L., Ardila, D., Abgrall, Hervé, Espaillat, C., Walter, F., Thomas Bethell, Roueff, Evelyne, Melissa McClure, Nuria Calvet, G. Gregory, Scott, Jeff Valenti, Herczeg, Gregory J., Laura Ingleby, Hervé Abgrall, Bergin, E., Bethell, Thomas J., Calvet, N., Johns-Krull, Christopher, Brown, J., Alexander, Richard, Herczeg, Gregory, Brown, A., Alexander, R., Edwards, Suzan, Hillenbrand, Lynne A., Ardila, David, Valenti, J., Bethell, T., Linsky, Jeffrey, Kevin France, Lynne Hillenbrand, Hillenbrand, Lynne, Hillenbrand, L., Gregory, Scott G.   +79 more
core   +1 more source

Identifying Suitable Front Contacts for High‐Efficiency Cd(Se,Te) Solar Cells on Space‐Qualified Cover Glass

Progress in Photovoltaics: Research and Applications, EarlyView.
Front contact selection governs interfacial stability in CdTe‐based (Cd(Se,Te)) solar cells on ultra‐thin space‐qualified cover glass. Optimized TCO/emitter combinations suppress interdiffusion and deliver up to 16.2% AM0 efficiency with high specific power, demonstrating strong potential for lightweight space photovoltaics.
Aesha P. Patel, Ryan Muzzio, Matthew R. Young, Robert Morrissey, Suresh Chaulagain, B. Edward Sartor, Prabodika N. Kaluarachchi, Christian Velez, Joshua A. Brown, Bishal Shrestha, Joel N. Duenow, Stephen Glynn, Michael J. Heben, Zhaoning Song, Nikolas J. Podraza, Adam B. Phillips, Randy J. Ellingson, Matthew O. Reese   +17 more
wiley   +1 more source

Nanoplasmonic filters for hollow core photonic crystal fibres [PDF]

, 2014
We demonstrate a method to add photonic functionalities to the tip of hollow photonic crystal bres, for ultra-compact and integrated lab-on-bre applications.
Andrea Di Falco, Di Falco, Andrea, Peter Reader-Harris, Reader-Harris, Peter John   +3 more
core   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source