XRISM's high-resolution spectra of SN 1987A show 1500-1700 km/s Doppler-broadened Si, S, and Fe lines, indicating that the observed X-rays come from kinematic, non-metal-rich shocked ejecta.
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Thermal and Kinematic Properties of Ejecta in SN1987A revealed by XRISM
XRISM's high-resolution spectra of SN 1987A show 1500-1700 km/s Doppler-broadened Si, S, and Fe lines, indicating that the observed X-rays come from kinematic, non-metal-rich shocked ejecta.