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In this paper, we present the analysis of a deep (99.6 ks) observation of G304.6+0.1 with the X‐ray Imaging Spectrometer on board the  Suzaku  satellite. The X‐ray spectral data are well fitted with a plasma model consisting of a thermal component, in collisional ionization equilibrium, and a non‐thermal component. The thermal emission is well fitted with the  vmekal  model with an electron temperature of  kT  e ∼ 0.75 keV, a high absorbing column density of  N  H ∼ 3.9 × 10 22  cm −2  and near/lower solar abundances, which indicate that the X‐ray emitting plasma of G304.6+0.1 is dominated by a swept‐up ambient medium. The non‐thermal component is well fitted with a power‐law model with a photon index of Γ∼ 1.4. We have found a relatively high electron density  n  e ∼ 2.3 f  −1/2  cm −3 , an age  t ∼ 1.4 × 10 4  f  1/2  yr and an X‐ray emitting mass  M  x ∼ 380 f  1/2  M ⊙  at an adopted distance of  d = 10 kpc. Using the morphological and spectral X‐ray data, we confirm that the remnant is a new member of the mixed‐morphology supernova remnants.

A deep X‐ray observation of the supernova remnant G304.6+0.1 (Kes 17) using Suzaku