Absolute Motion of the Infrared Counterpart to Sagittarius A* in the Gaia Celestial Reference Frame 3 and Limits on an Intermediate-mass Black Hole Companion
The episode discusses a paper detailing the absolute motion of Sagittarius A*'s infrared counterpart using Gaia Celestial Reference Frame 3 data. Hosts discuss how this research sets a new standard for measuring objects in the Galactic center, constrains parameters for potential intermediate-mass black hole companions, and provides a roadmap for future improvements with upcoming data releases.