Results 131 to 140 of about 34,380 (305)

Scalable, Advanced Machine Learning Based Approaches for Stellar Flare Identification: Application to TESS Short-cadence Data and Analysis of a New Flare Catalog

The Astronomical Journal
We apply multialgorithm machine learning models to TESS 2 minute survey data from Sectors 1–72 to identify stellar flares. Models trained with deep neural network, random forest, and XGBoost algorithms utilize four flare light-curve characteristics as ...
Chia-Lung Lin, Dániel Apai, Mark S. Giampapa, Wing-Huen Ip   +3 more
doaj   +1 more source

Flares In Long And Short Gamma Ray Bursts

, 2010
The many similarities between the prompt emission pulses in gamma ray bursts (GRBs) and X-ray flares during the fast decay and afterglow phases of GRBs suggest a common origin.
Arnon Dar, Berger, Beuermann, Bloom, Briggs, Butler, Castro-Tirado, Chincarini, Chincarini, Chincarini, Dado, Dado, Dado, Dado, Dado, Dado, Dado, Dado, Dar, Dar, De Rújula, Falcone, Falcone, Fan, Fruchter, Fruchter, Galama, Garnavich, Gendre, Golenetskii, Golenetskii, Gotz, Grupe, Holland, Jakobsson, King, Kocevski, Kruhler, Kuin, Kumar, LaCluyze, Li, Lipkin, Margutti, Markwardt, Markwardt, Mirabal, Morris, Nousek, Ohno, Perley, Perna, Pian, Piro, Proga, Rykoff, Rykoff, Sagar, Sakamoto, Shlomo Dado, Wozniak, Wozniak, Zhang   +62 more
core   +1 more source

Simultaneous Detection of Optical Flares of the Magnetically Active M-dwarf Wolf359 [PDF]

, 2022
Han-Tang Lin, Wen-Ping Chen, Jinzhong Liu, Xuan Zhang, Yu Zhang, J.-H. Wang, Shiang‐Yu Wang, M. J. Lehner, Chih-Yi Wen, Jinli Guo, Yuan Chang, Ming Chang, An-Li Tsai, Chia-Lung Lin, Chieh Hsu, Wing Ip   +15 more
openalex   +1 more source

Amplification of Light‐Ultrasound Interaction in a Pi‐Shifted Fiber Bragg Grating for Enhanced Ultrasonic Sensitivity

Laser &Photonics Reviews, EarlyView.
By precisely engineering the geometry of a fiber‐based optical resonator, the interaction between confined light and external ultrasound waves is significantly amplified without sacrificing light confinement, boosting the ultrasound detection sensitivity beyond 0.5 mPa/√Hz.
Tai‐Anh La, Rami Shnaiderman, Vasilis Ntziachristos   +2 more
wiley   +1 more source

Thick Target Models of Impulsive Chromospheric Flares [PDF]

, 1978
The most impulsive flares show large amplitude intensity variations in times of order 10 s. An attempt is made to reproduce the properties of these events with a model in which the heating of a static chromosphere by a nonthermal electron beam is ...
LaBonte, Barry J.
core  

Mydriasis as a Secondary Effect in Patients With HLA‐B27–Associated Uveitis

Medicine Advances, EarlyView.
HLA‐B27‐associated acute anterior uveitis causes significant inflammation of the iris and anterior chamber, which disrupts normal parasympathetic control and results in increased sympathetic tone leading to pupil dilation (mydriasis). This finding can sometimes resemble herpetic uveitis, making a clinical context and careful evaluation crucial for ...
Saim Mahmood Khan, Menahil Faheem Siddiqui, Syeda Areesha Shoaib, Surraiya Riaz Mahmood Khan, Jawairya Muhammad Hussain, Syeda Faiqa Batool, Hudda Amjad   +6 more
wiley   +1 more source

Rapid Optical Flares in the Blazar OJ 287 on Intraday Timescales with TESS [PDF]

, 2023
Shubham Kishore, Alok C. Gupta, Paul J. Wiita   +2 more
openalex   +3 more sources

Optical flares from the faint mid‐dM star 2MASS J00453912+4140395 [PDF]

, 2007
Zs. Kővári, F. Vilardell, I. Ribas, K. Vida, L. van Driel‐Gesztelyi, C. Jordi, K. Oláh   +6 more
openalex   +1 more source

Advancing Severe Plastic Deformation for Tubular Samples: Systematic Review and Machine Learning Optimization

MetalMat, EarlyView.
This review highlights recent advancements in Severe Plastic Deformation (SPD) techniques tailored for tubular samples. The mechanisms of processing are critically discussed with emphasis on microstructural control and the governing process parameters that enable refinement to ultrafine‐ and nano‐grained structures. Comparative insights into equivalent
Eman M. Zayed, Abdulrahman I. Alateyah, Waleed H. El‐Garaihy, Mahmoud Shaban, Majed Alinizzi, Nahed A. El‐Mahallawy   +5 more
wiley   +1 more source

CORRELATED OPTICAL AND X-RAY FLARES IN THE AFTERGLOW OF XRF 071031 [PDF]

, 2009
T. Krühler, J. Greiner, S. McBreen, S. Klose, A. Rossi, P. Afonso, C. Clemens, R. Filgas, A. Küpcü Yoldaş, G. P. Szokoly, A. Yoldaş   +10 more
openalex   +1 more source