Results 181 to 190 of about 243,781 (346)
Advances in Mechanochemical Methods for One‐Pot Multistep Organic Synthesis
Chemistry – A European Journal, EarlyView.This review highlights recent advances in mechanochemical methods for multistep organic synthesis, focusing on sequential one‐pot approaches performed by grinding or ball milling. The presented transformations are discussed in terms of efficiency, applicability, and sustainability, assessing both the challenges and potential of solvent‐free one‐pot ...
Nina Biedermann, Michael Schnürch
wiley +1 more source
Time-averaging Polarimetric and Spectral Properties of Gamma-Ray Bursts
The Astrophysical Journal Supplement SeriesThe composition and radiation mechanism of gamma-ray bursts (GRBs) within jets continue to be hotly debated. Investigating the joint polarimetric and spectral properties is crucial for understanding the composition and radiation mechanism of GRBs ...
Liang Li, Soroush Shakeri
doaj +1 more source
A second catalog of gamma-ray bursts - 1978-1980 localizations from the interplanetary network [PDF]
, 1987 J. L. Atteia +15 more
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ChemSusChem, EarlyView.Support preparation can significantly impact the conversion in plasma catalytic experiments. Herein, two different discharges are studied: a dielectric barrier discharge and a nanosecond repetitively pulsed discharge, with different supports: alumina beads and laboratory‐made alumina monoliths, both loaded with silver.
Francesco Spadoni +6 more
wiley +1 more source
On the astronomical nature of the sources of gamma-ray bursts [PDF]
, 1985 I. S. Shklovskii +1 more
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Effect of Background Magnetic Field on Ion Weibel Instability With High‐Intensity Short‐Pulse Lasers
Contributions to Plasma Physics, EarlyView.ABSTRACT The effect of finite background magnetic field on magnetic field amplification by Weibel instability using high‐intensity short‐pulse lasers is investigated. We consider Weibel instability for counter‐streaming sub‐relativistic plasma flows generated by shooting pure carbon targets with short‐pulse lasers.
Taiki Jikei +3 more
wiley +1 more source
GRB 220304A: Another Gamma-Ray Burst Dominated by Thermal Radiation
The Astrophysical JournalWe report a recently detected long-duration gamma-ray burst (GRB) event by Fermi-GBM, GRB 220304A. The spectral analysis of the burst by the Band function shows that both the time-integrated and time-resolved spectra are very narrow, with low-energy ...
Jia-Ming Chen, Zhao-Yang Peng
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Plasma Production by Laser Ablation of Heavy Metals
Contributions to Plasma Physics, EarlyView.ABSTRACT An Nd:YAG focused laser operating at 1064 nm, 3 ns pulse width, 360 mJ pulse energy, is employed to irradiate heavy metals, such as Ta, W, Pt, Au, and Pb. The in‐vacuum irradiation produces an expanding plasma at the target surface which has high density, temperature, and kinetic energy of emitted ions. Ions have a velocity of the order of 104
L. Torrisi, M. Cutroneo, A. Torrisi
wiley +1 more source
The Astrophysical JournalThe repointing time of the X-Ray Telescope (XRT) instrument on the Neil Gehrels Swift Observatory satellite has posed challenges in observing and studying the early X-ray emissions within ≈40 s after a gamma-ray burst (GRB) trigger. To address this issue,
C. L. Bianco +9 more
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A Comprehensive Analysis of Insight-HXMT Gamma-Ray Burst Data. I. Power Density Spectrum
The Astrophysical JournalThe power density spectrum (PDS) is a powerful tool to study light curves of gamma-ray bursts (GRBs). We show the average PDS and individual PDS analysis with GRB data from the Hard X-ray Modulation Telescope (also named Insight-HXMT).
Zi-Min Zhou +13 more
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