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The 3D X-Ray Ejecta Structure of Tycho's Supernova Remnant
We present our velocity measurements of 59 clumpy, metal-rich ejecta knots in the supernova remnant (SNR) of SN 1572 (Tycho). We use our 450 ks Chandra High Energy Transmission Grating Spectrometer observation to measure the Doppler shift of the He-like Si Kα line-center wavelength emitted from these knots to find their line-of-sight (radial) velocities (v r ). We find v r up to ∼5500 km s−1, with roughly consistent speeds between blueshifted and redshifted ejecta knots. We also measure thedoi:10.3847/1538-4357/ac8f30 fatcat:ovo4rtnrajb23kdrzfn26qrka4