A high-resolution radio survey discussed in a July government science release found nuclear radio emission in 68 of 280 nearby galaxies. The research paper is more qualified than a claim that every detection reveals a feeding black hole: the authors consider emission associated with active galactic nuclei, nearby star formation and, in one case, a tidal-disruption event.
The paper appeared in Monthly Notices of the Royal Astronomical Society and was published online on March 18, 2026. The July publicity therefore describes previously published research, not an October discovery.
At 5 GHz, the survey's detection fraction is about 24 percent. That number describes sources detected in this sample with this observing setup. It is not, by itself, the proportion of all galaxies containing black holes, or a measurement of how quickly their black holes are growing.
The authors report that most detections are compact, while a smaller group shows jet structures. Resolving a compact source is useful because it narrows the region producing the signal. It does not remove the need to distinguish different physical mechanisms that can produce radio emission near a galaxy's centre.
This distinction changes the story's conclusion. The survey supports investigation of weak nuclear activity and its variety; it does not justify treating all nuclear radio sources as an identical population of actively accreting black holes.
The careful result is still scientifically useful. A catalogue with resolved structures and explicit alternative explanations gives researchers a basis for testing individual sources. Reporting those qualifications preserves what the study actually establishes instead of converting an observational detection into a stronger physical claim.
