Results 91 to 100 of about 2,463 (300)

Machine Learning‐Assisted Design and Performance Prediction of a Compact Dual‐Band Polarization‐Insensitive THz Metamaterial Absorber for Skin‐Cancer‐Related Refractive‐Index Sensing

Advanced Electronic Materials, EarlyView.
A compact QASRR‐based THz metamaterial absorber enables polarization‐insensitive dual‐band absorption and skin‐cancer‐related refractive‐index sensing through measurable resonance shifts. Field, surface‐current, and circuit analyses clarify the dual‐resonance mechanism, while StackNet‐assisted prediction accurately estimates the simulated absorption ...
Md. Murad Kabir Nipun, S. M. Rifatur Rana, Md. Golam Morshed, Imrose Jahan, F. A. Sabbir Ahamed, Md. Jahedul Islam   +5 more
wiley   +1 more source

Constraining the Mass Loss and the Kinetic Energy of Stellar Coronal Mass Ejections with Solar Far-ultraviolet Flares

The Astrophysical Journal
Stellar eruptive events, such as flares and coronal mass ejections (CMEs), can affect planetary habitability by disturbing the stability of their atmospheres.
Nuri Park, Evgenya L. Shkolnik, Joe Llama   +2 more
doaj   +1 more source

Flare and Warp of Galactic Disk with OB Stars from Gaia DR2

, 2019
The OB stars are selected from the Gaia DR2 catalog to explore the flare and warp of the Galactic disk in this work. The Gaia and 2MASS photometric information is adopted as the criteria to choose the sample stars.
Wang,Qixun, Liao, Shilong, Yang, Chengqun, Wang, Qixun, Jia,Yunpeng, Liao,Shilong, Li, Chengdong, Li,Chengdong, Yang,Chengqun, Zhao, Gang, Jia, Yunpeng, Zhao,Gang   +11 more
core   +1 more source

X-ray Super-Flares From Pre-Main Sequence Stars: Flare Energetics, Frequency, and Loop Geometry

, 2021
Solar-type stars exhibit their highest levels of magnetic activity during early convective pre-main sequence (PMS) phase of evolution. The most powerful PMS flares, super-flares (SFs), have total energies 1034-1038 erg.
Getman, Konstantin V., Feigelson, Eric D.   +1 more
core   +1 more source

Machine Learning Interatomic Potentials for Energy Materials: Architectures, Training Strategies, and Applications

Advanced Energy Materials, EarlyView.
Machine learning interatomic potentials bridge quantum accuracy and computational efficiency for materials discovery. Architectures from Gaussian process regression to equivariant graph neural networks, training strategies including active learning and foundation models, and applications in solid‐state electrolytes, batteries, electrocatalysts ...
In Kee Park, Saeed Pourasad, Jinhong Mun, Arunkumar Chitteth Rajan, Tae Hyeon Park, Anand Rohit, Mohammad Zafari, Tan‐Lien Pham, Eunjae Jung, Bonseung Koo, Miran Ha, Gi Beom Sim, Hyun Gyu Park, Won Woong Choi, Kwanghyeon Jo, Soohaeng Yoo Willow, David ChangMo Yang, Chang Woo Myung, Geunsik Lee, Kwang S. Kim   +19 more
wiley   +1 more source

Molecular Hydrogen Controls the Temperatures of Flares on TRAPPIST-1

The Astrophysical Journal Letters
Early JWST observations of TRAPPIST-1 have revealed an unexpected puzzle: energetic white-light flares ( E  > 10 ^30 erg) reach temperatures of only ∼3500–4000 K, nearly 3 times cooler than typical solar flares, which peak around 9000–10,000 K.
A. I. Shapiro, N. Kostogryz, S. Seager, V. Witzke, J. de Wit, V. Vasilyev, Astrid M. Veronig, Cameron Robert, Peter Hardi, S. K. Solanki   +9 more
doaj   +1 more source

Radio burst statistics for M dwarf flare stars

, 1997
We present a critical analysis on the number of bursts near 21 cm from nine dMe flare stars of the solar neighborhood as reported in the literature. We compare our findings with the number of bursts detected with the Arecibo radiotelescope between 1989
M. Abada-Simon, M. Aubier
core   +1 more source

Optical Spectroscopy of a Flare on Barnard’s Star

Publications of the Astronomical Society of the Pacific, 2006
Accepted for publication in ...
Paulson, D., Allred, J., Anderson, R., Hawley, S., Cochran, W., Yelda, S.   +5 more
openaire   +2 more sources

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

The Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li, Mike Schindler, Martha Paskin, Venkata A. Surapaneni, Elliott Scott, Sabine Hauert, Nicholas Payne, David E. Cade, Jeremy A. Goldbogen, Frederik H. Mollen, Daniel Baum, Sean Hanna, Mason N. Dean   +12 more
wiley   +1 more source

Time-dependent Stellar Flare Models of Deep Atmospheric Heating

The Astrophysical Journal
Optical flares have been observed from magnetically active stars for many decades; unsurprisingly, the spectra and temporal evolution are complicated.
Adam F. Kowalski, Joel C. Allred, Mats Carlsson   +2 more
doaj   +1 more source