XRISM observation decomposes the Fe Kα line in Cygnus A into broad (3400 km/s, 0.1-0.17 pc) and narrow (440 km/s, 6-10 pc) Keplerian components attributed to the broad line region and torus.
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XRISM detection of the 6.4 keV Fe K$\alpha$ line in the radio galaxy Cygnus A
XRISM observation decomposes the Fe Kα line in Cygnus A into broad (3400 km/s, 0.1-0.17 pc) and narrow (440 km/s, 6-10 pc) Keplerian components attributed to the broad line region and torus.