Results 81 to 90 of about 62,844 (248)
SOUSA's Swift Supernova Siblings [PDF]
arXiv, 2015 Swift has observed over three hundred supernovae in its first ten years. Photometry from the Ultra-Violet Optical Telescope (UVOT) is being compiled in the Swift Optical/Ultraviolet Supernovae Archive (SOUSA). The diversity of supernovae leads to a wide dynamic range of intrinsic properties.
arxiv
Circumstellar Nebulae in Young Supernova Remnants [PDF]
, 2000 Supernovae descendent from massive stars explode in media that have been modified by their progenitors' mass loss and UV radiation. The supernova ejecta will first interact with the circumstellar material shed by the progenitors at late evolutionary stages, and then interact with the interstellar material.
arxiv +1 more source
The physics of asymmetric supernovae and supernovae remnants [PDF]
Advances in Applied Physics, 2018 We model the circumstellar medium with four density profiles: hyperbolic type, power law type, exponential type and Gaussian type. We solve analytically or numerically the four first-order differential equations which arise in the framework of the classical thin layer approximation.
openaire +4 more sources
Astrophysics and Space Science, 2012 18 pages, 5 figures.
Massimo Turatto +3 more
openaire +3 more sources
Reduction of CO2 and Related Compounds with a Low‐Valent CaI Synthon
ChemistryEurope, EarlyView.The reduction of CO2, CS2, or carbodiimide with a CaI synthon results in formation of calcium complexes with CO32−, CS22− or C–C coupled carbodiimide dianions. Differences between reduction of these reagents with the CaI synthon and established MgI complexes are discussed. Combined experimental and computational investigations give insight in the first
Stefan Thum +4 more
wiley +1 more source
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
Modelling the progenitors of Core-Collapse Supernovae [PDF]
arXiv, 2004 We present details of our investigation of the progenitors to core-collapse supernovae. We discuss observations and the theory of the lowest-mass stars to explode as supernovae.
arxiv
Nuclear Physics B - Proceedings Supplements, 2001 The Sudbury Neutrino Observatory (SNO) has unique capabilities as a supernova detector. In the event of a galactic supernova there are opportunities, with the data that SNO would collect, to constrain certain intrinsic neutrino properties significantly, to test details of the various models of supernova dynamics, and to provide prompt notification to ...
openaire +3 more sources
ChemPlusChem, EarlyView.Biscyclometalated platinum(II) complex bearing a persistent radical is reported. The complex possesses a doublet emission excited state (D2) with a short excited state lifetime at room temperature and a long excited triplet (T1) excited state lifetime at 77 K.
Sandhya Verma +6 more
wiley +1 more source
Modeling Supernovae as an Optically Thick Fireball [PDF]
arXiv, 2022 We calculate the properties of 135 stellar supernovae using data from the Open Supernova Catalog. We generate temperatures, radii, luminosities, and expansion velocities using a spherically symmetric optically thick fireball model. These modeled parameters reveal trends that are common across different types of supernovae.
arxiv