Prefer a chat interface with context about you and your work?
X‐Ray Sources and Their Optical Counterparts in the Globular Cluster M4
We report on the Chandra X-Ray Observatory ACIS-S3 imaging observation of the Galactic globular cluster M4 (NGC 6121). We detect 12 X-ray sources inside the core and 19 more within the cluster half-mass radius. The limiting luminosity of this observation is LX ≈ 1029 ergs s-1 for sources associated with …