Results 91 to 100 of about 199,466 (288)
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
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
Nonthermal X-ray emission from young Supernova Remnants [PDF]
, 2000 The cosmic-ray spectrum up to the knee ($E\sim 10^{15}$ eV) is attributed to acceleration processes taking place at the blastwaves which bound supernova remnants. Theoretical predictions give a similar estimate for the maximum energy which can be reached at supernova remnant shocks by particle acceleration. Electrons with energies of the order $\sim 10^
arxiv +1 more source
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
Cosmic ray acceleration and escape from supernova remnants [PDF]
, 2013 Galactic cosmic ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CR escaping the SNR.
A. Bell +3 more
semanticscholar +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
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
New Galactic supernova remnants discovered with IPHAS [PDF]
, 2013 As part of a systematic search programme of a 10-degree wide strip of the Northern Galactic plane we present preliminary evidence for the discovery of four (and possibly five) new supernova remnants (SNRs).
L. Sabin +9 more
semanticscholar +1 more source
A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm
Astronomische Nachrichten, EarlyView.ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber +3 more
wiley +1 more source
Shocks and Particle Acceleration in Supernova Remnants: Observational Features [PDF]
, 2003 The last ten years a number of observational advances have substantially increased our knowledge of shock phenomena in supernova remnants. This progress has mainly been made possible by the recent improvements in X-ray and Gamma-ray instrumentation. It has become clear that some shell-type supernova remnants, e.g. SN 1006, have X-ray emission dominated
arxiv +1 more source