Abstract
Abstract We present XMM-Newton and Suzaku results of an X-ray source, 2XMM J045637.2$+$522411, found during an observation of a galactic supernova remnant (SNR), G156.2$+$5.7. By comparing its radial profile with the point-spread function, we found that 2XMM J045637.2$+$522411 is an extended source. X-ray spectra exhibited a line-like structure at 5.7–5.8 keV. Since no abundant element emits an X-ray line at 5–6 keV in the rest-frame, and the most intense emission line in the 5–7 keV energy band is a Fe-K line, the line is likely to be a redshifted Fe-K line. The overall spectra can be represented by a thin-thermal plasma model with a temperature of 3–4 keV and a redshift of 0.15–0.17. No intensity variation was found in the light curve. The observational results indicate that 2XMM J045637.2$+$522411 is likely to be a cluster of galaxies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
