XRISM resolves the neutral iron K-alpha doublet in the low-luminosity AGN M81*, finding a narrow, unshifted line consistent with emission at r >= 2.7 x 10^4 GM/c^2, likely a remnant torus.
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XRISM Reveals a Remnant Torus in the Low-Luminosity AGN M81*
XRISM resolves the neutral iron K-alpha doublet in the low-luminosity AGN M81*, finding a narrow, unshifted line consistent with emission at r >= 2.7 x 10^4 GM/c^2, likely a remnant torus.