On the contribution of the 6.7 keV line emission of the Algol binary system tothe 6.7 keV line emission from the galactic ridge

Abstract

We carried out spectroscopic analysis of the extracted stellar are of the Algol binary system observed usingthe Suzaku satellite (OBSID: 401093010), and resolved a strong 6.7 keV line emission. The 6.7 keV line emission of theAlgol binary system is similar to the 6.7 keV line of the galactic ridge X-ray emission (GRXE). The equivalent width(EW) compared favorably with the EW of the 6.7 keV emission line obtained from different galactic ridge regions. Inthe galaxy, we have a reasonable number of Algol binary systems and many other stars as strong coronal X-ray emitterscharacterized by frequent quiescent and super aring phases as observed by Suzaku, and these systems could contributeto the 6.7 keV emission line from the galactic ridge.