Summary
Abstract This paper reports the analysis of the X-ray spectra of the Galactic diffuse X-ray emission (GDXE) in the Suzaku archive. The fluxes of the Fe i Kα (6.4 keV), Fe xxv Heα (6.7 keV), and Fe xxvi Lyα (6.97 keV) lines are separately determined. From the latitude distributions, we confirm that the GDXE is decomposed into the Galactic center (GCXE), the Galactic bulge (GBXE) and the Galactic ridge (GRXE) X-ray emissions. The scale heights (SHs) of the Fe xxv Heα line of the GCXE, GBXE, and GRXE are determined to be ∼40, ∼310, and ∼140 pc, while those of the Fe i Kα line are ∼30, ∼160, and ∼70 pc, respectively. The mean equivalent widths (EWs) of the sum of the Fe xxv Heα and Fe xxvi Lyα lines are ∼750 eV, ∼600 eV, and ∼550 eV, while those of the Fe i Kα line are ∼150 eV, ∼60 eV, and ∼10
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