Search results for " X-rays: individuals: Cas A"

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Unveiling pure-metal ejecta X-ray emission in supernova remnants through their radiative recombination continuum

2020

Spectral analysis of X-ray emission from ejecta in supernova remnants (SNRs) is hampered by the low spectral resolution of CCD cameras, which creates a degeneracy between the best-fit values of abundances and emission measure. The combined contribution of shocked ambient medium and ejecta to the X-ray emission complicates the determination of the ejecta mass and chemical composition, leading to big uncertainties in mass estimates and it can introduce a bias in the comparison between the observed ejecta composition and the yields predicted by explosive nucleosynthesis. We explore the capabilities of present and future spectral instruments with the aim of identifying a spectral feature which …

High Energy Astrophysical Phenomena (astro-ph.HE)Physics010504 meteorology & atmospheric sciencesSpectrometerAstrophysics::High Energy Astrophysical PhenomenaBremsstrahlungFOS: Physical sciencesAstronomy and AstrophysicsAstrophysics01 natural sciencesSpectral lineSupernovaSettore FIS/05 - Astronomia E AstrofisicaSpace and Planetary ScienceNucleosynthesis0103 physical sciencesISM: abundances ISM: individual objects: Cas A ISM: supernova remnants X-rays: general X-rays: individuals: Cas AAstrophysics::Solar and Stellar AstrophysicsSpontaneous emissionSpectral resolutionAstrophysics - High Energy Astrophysical PhenomenaEjecta010303 astronomy & astrophysicsAstrophysics::Galaxy Astrophysics0105 earth and related environmental sciences

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