Iron distribution in a Supernova Remnant

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The scene vividly depicts the distribution of iron within the remnant of a neutrino-driven supernova explosion. Marked by a colorful isosurface, it highlights the iron distribution after 359 years of evolution - a time frame comparable to that of SNR Cassiopeia A - as derived from an advanced hydrodynamic model known as W15-2-cw-IIb-HD+dec. The opaque, irregularly shaped isosurface corresponds to an iron density value at just 5% of its peak density; meanwhile, the colors on this surface represent the radial ejecta velocity in units of 1000 km/s (the color coding can be found at the bottom of the scene). Semi-transparent, quasi-spherical surfaces indicate the forward (green) and reverse (yellow) shock waves. The Earth's vantage point is located on the negative y-axis. An MHD simulation conducted with the PLUTO code provides a detailed look into this phenomenon. Orlando et al. 2021, A&A 645, A66 offers further reference to this study.