Results 71 to 80 of about 601,801 (299)
Spectral Line Search in Bright Gamma-Ray Bursts Observed by Fermi/GBM
The Astrophysical JournalThe recently reported discoveries of emission lines with power-law decay from ∼37 to ∼6 MeV in the gamma-ray burst (GRB) 221009A have greatly contributed to probing the physics of GRBs, which also raises the natural question of whether there are more ...
Tong-Lei Liao +15 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.The influence of Hot Isostatic Pressing (HIP) temperature on the microstructure and creep performance of powder bed fusion–laser beam processed CM247LC superalloy is investigated. Grain growth and γ’ precipitate evolution are characterized following HIP at varying temperatures.
Ahmed Fardan +4 more
wiley +1 more source
TeV Afterglows of Gamma-Ray Bursts: Theoretical Analysis and Prospects for Future Observations
The Astrophysical JournalRecent detections of gamma-ray bursts (GRBs) at TeV energies opened new prospects for investigating radiative environments and particle acceleration mechanisms under extreme conditions.
Luca Foffano, Marco Tavani
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Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study
Advanced Engineering Materials, EarlyView.Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji +5 more
wiley +1 more source
Multi-instrument Search for Gamma-Ray Counterpart of X-Ray Transients Detected by EP/WXT
The Astrophysical Journal LettersAs a soft X-ray imager with an unprecedentedly large field of view, Einstein Probe (EP)/Wide-field X-ray Telescope (WXT) has detected many (fast) X-ray transients, whose nature is very intriguing.
Yan-Qiu Zhang +27 more
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Coded-aperture based stereo gamma-ray imager for near field 3-D localization
Nuclear Engineering and TechnologySince the Fukushima nuclear disaster, the use of gamma-ray imagers to explore contaminated areas has increased substantially. Contaminated area identification and radionuclide determination techniques are essential for creating detailed radioactive ...
Seungho Lee +5 more
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Advanced Engineering Materials, EarlyView.Fe–12Mn–0.2C medium‐manganese steel is processed by laser‐based powder bed fusion of metals using blended as well as pre‐alloyed powder. Various scanning speeds are used to determine the influence of energy deposition rate on microstructure and mechanical properties.
Leoni Hübner +4 more
wiley +1 more source
Theoretical Modeling of the Exceptional GRB 221009A Afterglow
The Astrophysical Journal LettersThe extraordinary gamma-ray burst GRB 221009A provides a great opportunity to investigate the enigmatic origin and evolution of gamma-ray bursts (GRBs). However, the complexity of the observations associated with this GRB provides significant challenges ...
Luca Foffano +2 more
doaj +1 more source
Development of SiC Nanocomposites Using Direct Ink Writing Process
Advanced Engineering Materials, EarlyView.Herein, feedstock inks containing polycarbosilane and various concentrations of SiC nanoparticles (SiCnp) are investigated for fabricating ceramic matrix composites using a DIW 3D printing process. Characterization results from physical measurement, microstructure analysis, and thermal and flexural testing suggested that high‐performance CMC samples ...
Jinchen Han +5 more
wiley +1 more source
The Astrophysical JournalIn this study, we present the pulse profile of the unique and the second-brightest gamma-ray burst GRB 230307A, and analyze its temporal behavior using a joint GECAM–Fermi Gamma-ray Burst Monitor (GBM) time-resolved spectral analysis.
R. Moradi +8 more
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