Results 31 to 40 of about 7,213 (266)

Event types in H.E.S.S.: A combined analysis for different telescope types and energy ranges

Astronomy & Astrophysics
Imaging atmospheric Cherenkov telescopes (IACTs) are the main technique for detecting gamma rays with energies between tens of GeV and hundreds of TeV.
Guedes Lang Rodrigo, Unbehaun Tim, Mohrmann Lars, Steinmassl Simon, Hinton Jim, Funk Stefan   +5 more
doaj   +1 more source

Magnetism Science with the Square Kilometre Array

Galaxies, 2020
The Square Kilometre Array (SKA) will answer fundamental questions about the origin, evolution, properties, and influence of magnetic fields throughout the Universe.
George Heald, Sui Ann Mao, Valentina Vacca, Takuya Akahori, Ancor Damas-Segovia, B. M. Gaensler, Matthias Hoeft, Ivan Agudo, Aritra Basu, Rainer Beck, Mark Birkinshaw, Annalisa Bonafede, Tyler L. Bourke, Andrea Bracco, Ettore Carretti, Luigina Feretti, J. M. Girart, Federica Govoni, James A. Green, JinLin Han, Marijke Haverkorn, Cathy Horellou, Melanie Johnston-Hollitt, Roland Kothes, Tom Landecker, Błażej Nikiel-Wroczyński, Shane P. O’Sullivan, Marco Padovani, Frédérick Poidevin, Luke Pratley, Marco Regis, Christopher John Riseley, Tim Robishaw, Lawrence Rudnick, Charlotte Sobey, Jeroen M. Stil, Xiaohui Sun, Sharanya Sur, A. Russ Taylor, Alec Thomson, Cameron L. Van Eck, Franco Vazza, Jennifer L. West, the SKA Magnetism Science Working Group   +43 more
doaj   +1 more source

The burst observer and optical transient exploring system in the multi-messenger astronomy era

Frontiers in Astronomy and Space Sciences, 2023
The Burst Observer and Optical Transient Exploring System (BOOTES) was first designed as an asset of autonomous telescopes that started to be deployed in 1998, taking 24 years to be fully developed around the earth.
Y.-D. Hu, E. Fernández-García, M. D. Caballero-García, I. Pérez-García, I. M. Carrasco-García, A. Castellón, C. Pérez del Pulgar, A. J. Reina Terol, A. J. Castro-Tirado, A. J. Castro-Tirado   +9 more
doaj   +1 more source

Charge Generation and Recombination Pathways in All‐Polymer Bulk Heterojunction Solar Cells

Advanced Functional Materials, EarlyView.
Multimodal spectroscopy and device analysis reveal how field‐dependent charge generation, transport limitations, and non‐geminate recombination govern performance losses in all polymer solar cells. The results identify the key processes controlling charge extraction and recombination, providing insights for the design of more efficient all‐polymer ...
Shahidul Alam, Wejdan Althobaiti, Safakath Karuthedath, Christopher E. Petoukhoff, Amr Dahman, Khawla Alkhezaim, Oleksandr Matiash, José P. Jurado, Mariia Ferree, Ning Su, Jacob Blaskovits, Denis Andrienko, Vladimir Dyakonov, Andreas Sperlich, Vojtech Nádaždy, Tobin J. Marks, Antonio Facchetti, Frédéric Laquai   +17 more
wiley   +1 more source

CLEAN and multiscale CLEAN for STIX in Solar Orbiter

Astronomy & Astrophysics
CLEAN is a well-established deconvolution approach to Fourier imaging at radio wavelengths and hard X-ray energies. One of the main limitations of CLEAN for hard X-ray imaging is that it requires a final convolution step by means of a convolution kernel ...
Catalano Miriana, Volpara Anna, Massa Paolo, Piana Michele, Massone Anna Maria   +4 more
doaj   +1 more source

Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

Advanced Materials, EarlyView.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno, Qiangrui Dong, Marco Post, Xin Meng, Cristiano Glessi, Nynke Marije Hettema, Nidas Brandsma, Sebbe Blokhuizen, Alejandro Castañeda Garcia, Srividya Ganapathy, Thieme Schmidt, Lars van Roemburg, Bing Xu, Chun‐Ting Cho, Liedewij Laan, Miao‐Ping Chien, Daan Brinks   +16 more
wiley   +1 more source

Jitter sensing and reconstruction from temporal series of solar images: Applications to TuMag

Astronomy & Astrophysics
Context. Images recorded with the Tunable Magnetograph (TuMag) instrument on board the SUNRISE III balloon observatory are affected by temporal contrast fluctuations. These variations are related to high-frequency vibrations (jitter) of the platform that
Bailén F. J., Orozco Suárez D., Siu-Tapia A. L., Strecker H., Blanco Rodríguez J., Arroyo D., Santamarina Guerrero P., del Toro Iniesta J. C., Bellot Rubio L. R., Morrell C., Gafeira R., Trelles Arjona J. C., Korpi-Lagg A., Gandorfer A., Solanki S. K., Katsukawa Y., Bernasconi P., Berkefeld T., Feller A., Riethmüller T. L., Raouafi N., Vourladis A., Álvarez-Herrero A., Kubo M., Martínez Pillet V., Smitha H. N., Grauf B., Iglesias F. A., Bell A., Kawabata Y., Oba T., Matsumoto T., Ishikawa R. T., Hölken J., Vukadinović D., Castellanos Durán J. S., Harnes E., Balaguer Jiménez M., Sanchis Kilders E., Torralbo I., Kuckein C., Álvarez García D., Aparicio del Moral B., Bailón Martínez E., Campos-Jara A., Cebollero M., Fernández-Medina A. B., García Parejo P., Garranzo-García D., Gasent Blesa J. L., López Jiménez A. C., Morales-Fernández J. M., Moreno Mantas A. J., Moreno Vacas A., Núñez Peral A., Pérez-Grande I., Piqueras Carreño J., Ramos Más J. L., Sánchez Barranquero J., Sánchez Gómez A., Silva-López M., Tobaruela A.   +61 more
doaj   +1 more source

The Planck Telescope

AIP Conference Proceedings, 2002
In this paper we present an overview of the Telescope designed for ESA's mission dedicated to map the Cosmic Microwave Background Anisotropies and Polarization. Two instruments, LFI and HFI, operate in an overall frequency range between 25 and 900 GHz and share the focal region of the 1.5 meter optimized telescope.
F. Villa, M. Bersanelli, C. Burigana, R. C. Butler, N. Mandolesi, A. Mennella, G. Morgante, M. Sandri, L. Terenzi, L. Valenziano   +9 more
openaire   +2 more sources

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Space debris contributions to night sky brightness

Astronomy & Astrophysics
Aims. We quantify the uncertainty in space debris contributions to night sky brightness by comparing predictions from two major debris environment models and assessing the resulting signal-to-noise degradation for ground-based astronomical observations ...
Wallner S., Kocifaj M., Silha J.
doaj   +1 more source