Results 51 to 60 of about 9,448 (220)
The infancy of supernova remnants: evolving a supernova into its remnant in 3D [PDF]
Proceedings of the International Astronomical Union, 2017 AbstractRecently, first neutrino-driven supernova explosions have been obtained in 3D, self-consistent, first-principle simulations, these models are still not always exploding robustly and, in general, the explosions are not sufficiently energetic. To constrain the explosion mechanism, and the related uncertainties, it is thus very helpful to consider
Michael Gabler +2 more
openaire +2 more sources
MeerKAT 1.3 GHz Observations of Supernova Remnants
The Astrophysical Journal Supplement SeriesWe present full Stokes MeerKAT L -band (856–1712 MHz) observations of 36 high-latitude supernova remnants (SNRs). Sensitive, high-dynamic-range images show a wealth of structure. G15.1−1.6 appears to be a H ii region rather than an SNR.
W. D. Cotton +5 more
doaj +1 more source
Doppler Broadening and Line-of-sight Effects in Core-collapse Supernovae and Young Remnants
The Astrophysical Journal, 2023 The dynamics and spectral characteristics of supernova ejecta reveal details of the supernova energetics, explosive nucleosynthesis, and evolution of the progenitor.
Taylor Jacovich +6 more
doaj +1 more source
Toward Reuse‐Ready PV: A Perspective on Recent Advances, Practices, and Future Challenges
Advanced Energy and Sustainability Research, EarlyView.This perspective study sheds light on current research and future challenges toward higher PV reuse readiness in PV industry. It highlights qualification methods, PV repair strategies, and standardization efforts for PV reuse. A four‐step example of triage‐for‐reuse framework is discussed, as well as recent advances in PV repair strategies for reuse ...
Ioannis (John) A. Tsanakas +8 more
wiley +1 more source
Advanced Energy and Sustainability Research, EarlyView.The energy transition increases electrical demand, primarily met by renewable sources, potentially raising system costs. In this study, the economic effects of flexible demand on solar integration and generation costs in Italy for 2030 and 2040 are assessed.
Elisa Veronese +3 more
wiley +1 more source
The Anatomical Record, EarlyView.Abstract Plutonium was discovered and first synthesized in the early 1940's. Several isotopes of plutonium are used in nuclear technologies, 238Pu for heat generation and 239Pu for energy production and weapons. Both isotopes emit alpha particles, which pose a significant radiation hazard when incorporated into the body.
Scott C. Miller
wiley +1 more source
A new numerical code for hydrodynamical 3D simulations of supernova remnants [PDF]
Serbian Astronomical Journal, 2019 We develop a 3D hydrodynamical code written in C programming language to study the expansion of supernova remnants (SNRs) in the surrounding medium. It is based on the MUSCL-Hancock finite volume scheme with the HLLC Riemann solver.
Kostić P.
doaj +1 more source
Highly Acyclic Selective Cobalt Catalysts for Butadiene Dimerization
ChemCatChem, EarlyView.A series of 11 cobalt(II) complexes were prepared and optimised for the linear selective dimerisation of butadiene to give 5‐methyl‐1,3,6‐heptatriene as the major product. The catalysts operated under mild reaction conditions, gave good reactivity and did not require the use of organometallic activators.
Joseph H. P. Cockcroft +5 more
wiley +1 more source
The Distribution of Supernova Remnants in the Galaxy [PDF]
International Astronomical Union Colloquium, 1991 Observational selection effects and the lack of accurate distances for most Galactic SNRs pose problems for studies of the distribution of SNRs in the Galaxy. However, by comparing the observed Galactic longitude distribution of high surface brightness SNRs with that expected from simple models — which avoids some of the problems with selection effects
openaire +4 more sources
Electron–Ion Temperature Ratio in Astrophysical Shocks
The Astrophysical Journal, 2023 Collisionless shock waves in supernova remnants and the solar wind heat electrons less effectively than they heat ions, as is predicted by kinetic simulations.
John C. Raymond +11 more
doaj +1 more source