During the last week Chandra completed the observing schedule as planned.

Real-time procedures were executed on Sep 21 and Sep 23 to perform full-frame dark current readouts of the Aspect Camera Assembly CCD.

A Chandra press release was issued on Sep 25 reporting the discovery of a rare closely-spaced triple system of merging galaxies, each centered on a supermassive black hole (SMBH). The techniques used to locate this system lend themselves to location of further examples of this phenomenon, important because the presence of a third SMBH may accelerate the merger of the other two, and because such merger events will result in the production of gravitational waves that should be detectable by future observatories. Chandra observations were complemented by observations from NuSTAR and the Large Binocular Telescope and by archival data from WISE and the Sloan Digital Sky Survey in the investigation of this system. For more information see: https://chandra.harvard.edu/press/19_releases/press_092519.html

The schedule of targets for the next week is shown below and includes an observation of AT2019pev, which was accepted as a Target of Opportunity on Sep 25.