Abstract

We have observed 69 unresolved X-ray sources and seven diffuse or confused source regions in M31 with the Einstein Observatory. The typical limiting sensitivies in the 0.5--4.5 keV band were 9 x 10/sup 36/ ergs s/sup -1/. There are 21 sources in a compact inner bulge, seven globular clusters, 40 sources we categorize as Population I, and i sources near globular clusters but with position errors large enough so that four chance coincidences would be expected. The Population I tracers. Luminosity distributions of these classes are given. The nucleus of M31 is coincident with a 10/sup 38/ ergs s/sup -1/ X-ray source at approximately the 90% confidence level.

Full Text
Paper version not known

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 call

Disclaimer: 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.