Cas A SNR North LobeChandra ACIS image(M. Stage)region of spectrum->10*km/s (be sure to convert your answer to kilometers!)(Enter a positive value--if you get a negative answer ignore the minus sign.)1000100Combine counts / Ang./ (0.964324 sq. arcsec)1010.1Cas A Ms Spectrum from 4362.5 4458.5, region size 0.964324 sq. arcsecSilicon linewerden der51020Wavelength (Angstroms)The speed of the material ejected in a supernova can be measured by using the Doppler shift of the X-ray emission lines in its spectrum. The images above show real X ray data of the Cassiopeia A supernova remnant and a spectrum extracted from that data--you can see several emission linesincluding the silicon line near 6.6 angstroms (0.66 nm).If the emission line created by silicon normally has a wavelength of 0.6648 nm (nanometers), but is measured in the spectrum to have a wavelength of 0.6599 nm, how fast is the gas moving?

Answered: The speed of the material ejected in a…

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