Results 101 to 110 of about 2,918,449 (280)

The Extreme-ultraviolet Precursors and Postcursors of Solar Flares

The Astrophysical Journal
EUV brightenings are small-scale magnetic reconnection events that consistently appear before and after solar flares. However, it is not well understood how EUV precursors might foreshadow flares and what the physical connection is between the EUV ...
Larisza D. Krista
doaj   +1 more source

Extreme Ultraviolet Emission from Neutron Stars

, 2007
Models of pulsar re-heating by magnetic monopole catalysis of nucleon decay are used to establish new limits to the flux of monopoles in the Galaxy. A single powerlaw source with properties derived from X-ray data cannot explain the EUV flux from PSR ...
S. Bowyer, J. Edelstein, R. S. Foster, By Foster   +3 more
core  

The Extreme UV Imager of Solar Orbiter – From detailed design to Flight Model [PDF]

, 2014
The Extreme Ultraviolet Imager (EUI) on-board the Solar Orbiter mission will provide full-sun and high-resolution image sequences of the solar atmosphere at selected spectral emission lines in the extreme and vacuum ultraviolet.
Winter, Berend, Verbeeck, F., Delmotte, F., F. Auchère, M. Gyo, J. Tandy, Kennedy, Tom, Halain, Jean-Philippe, B. Winter, Smith, P., Zhukov, A., Heerlein, Klaus, Berghmans, D., Smith, Philip, A. Hermans, Schmutz, Werner, D. Berghmans, C. Dumesnil, Gyo, Manfred, Gyo, M., K. Heerlein, A. Zhukov, R. Aznar Cuadrado, F. Delmotte, U. Schühle, Renotte, E., Aznar Cuadrado, R., Halain, J., Rochus, P., Mercier, R., Schühle, U., Harra, L., Auchère, F., Mazzoli, A., Mazzoli, Alexandra, P. Smith, Zhukov, Andrei, Thome, Michel, Halain, J.-P., Schühle, Udo, Harra, Louise, Dumesnil, C., L. Rossi, Tandy, Jason, Winter, B., Meining, Stefan, Thome, M., Hermans, A., R. Mercier, M. Thome, Delmotte, Franck, Verbeeck, Cis, Jacques, L., Kennedy, T., Renotte, Etienne, W. Schmutz, S. Meining, Hermans, Aline, Heerlein, K., Aznar Cuadrado, Regina, L. Harra, Auchère, Frédéric, F. Verbeeck, Schmutz, W., T. Kennedy, Jacques, Lionel, A. Mazzoli, Dumesnil, Cydalise, Meining, S., J.-P. Halain, E. Renotte, Mercier, Raymond, Rossi, Laurence, Rossi, L., Rochus, Pierre, Tandy, J., Berghmans, David, P. Rochus, L. Jacques   +78 more
core   +1 more source

Data‐Guided Photocatalysis: Supervised Machine Learning in Water Splitting and CO2 Conversion

Advanced Intelligent Discovery, EarlyView.
This review highlights recent advances in supervised machine learning (ML) for photocatalysis, emphasizing methods to optimize photocatalyst properties and design materials for solar‐driven water splitting and CO2 reduction. Key applications, challenges, and future directions are discussed, offering a practical framework for integrating ML into the ...
Paul Rossener Regonia, Christian Mark Pelicano   +1 more
wiley   +1 more source

Accelerating Materials Discovery: A Review of Machine Learning in X‐Ray Absorption Spectroscopy

Advanced Intelligent Systems, EarlyView.
This review systematically details how machine learning transforms X‐ray absorption spectroscopy (XAS) analysis. It covers advanced deep learning architectures for structure‐spectra mapping and inverse tasks, while discussing key challenges like the simulation‐to‐reality gap.
Melaku Lake Tegegne, Haodong Yao, Liyuan Wu, Yihe Pang, Fazhi Qi, Lina Zhao   +5 more
wiley   +1 more source

Near Infrared Photoswitching by Direct Excitation—A Next Frontier

Angewandte Chemie International Edition, EarlyView.
Molecular photoswitches finally enter the spectral realm of near‐infrared for their direct excitation. This minireview summarizes the current state‐of‐the‐art, the design principles for achieving such low‐energy light responsiveness, and the unique applications that are unlocked by it.
Diptiprava Sahoo, Elias Ciekalski, Henry Dube   +2 more
wiley   +1 more source

Quasiperiodic Super-Alfvénic Slippage along Flare Ribbons Observed by the Interface Region Imaging Spectrograph

The Astrophysical Journal Letters
The apparent slipping motion of flare loops is regarded as a key feature of the 3D magnetic reconnection in the solar flares. The slippage with a super-Alfvénic speed could be defined as slipping–running reconnection, while the slippage with a sub ...
Yining Zhang, Ting Li, Yijun Hou, Xuchun Duan, Zheng Sun, Guiping Zhou   +5 more
doaj   +1 more source

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

Astronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source

Evolution of Flare Ribbon Bead-like Structures in a Solar Flare

The Astrophysical Journal Letters
We present fast-cadence and high-resolution observations of flare ribbons from the Solar Orbiter Extreme Ultraviolet Imager (EUI). Utilizing the short-exposure observations from the EUI High Resolution Imager in the extreme-ultraviolet, we find small ...
Ryan J. French, Maria D. Kazachenko, David Berghmans, Elke D’Huys, Marie Dominique, Ritesh Patel, Dana-Camelia Talpeanu, Cole A. Tamburri, Rahul Yadav   +8 more
doaj   +1 more source

Accelerating green heterocyclic synthesis: Convergence of AI, automation, and sustainable chemistry

Bulletin of the Korean Chemical Society, EarlyView.
Green heterocyclic synthesis and data‐driven tools such as AI, high‐throughput experimentation, continuous flow, and self‐driving laboratories have developed largely in parallel. This review connects them and asks how green metrics such as E‐factor and PMI might serve as explicit optimization targets rather than post‐hoc measures, toward sustainable ...
Noor Aisyah Ahmad Shah, Amirreza Mottafegh, Su‐Hyun Yoo, Jongwoon Kim, Minseon Byeon, Juhwan Noh, Yea‐Lee Lee, Jin Suk Myung, Gwang‐Noh Ahn   +8 more
wiley   +1 more source