A novel radio transient
Scientists have identified a radio transient that markedly differs from the typical short‑lived events observed in galactic nuclei. While most such sources are active for only days to weeks, the object in the distant galaxy SDSS J110546.07+145202.4 has been emitting strong radio waves continuously for multiple years.
Origin near a supermassive black hole
The emission is linked to processes occurring in the immediate environment of a supermassive black hole, where extreme physical conditions enable the acceleration of high‑energy particles and intense magnetic activity.
Resemblance to the early universe
The observed properties—particularly the longevity and spectral shape—mirror those expected from the first active galaxies in the early universe, offering clues about the behaviour of primordial black‑hole surroundings.
Implications for astrophysics
This discovery expands the known diversity of radio sources and challenges existing models of transient lifetimes and energetics. Persistent, high‑intensity radio outbursts may represent a previously underappreciated contribution to a galaxy’s overall emission.
Future observations
Planned follow‑up with high‑resolution radio arrays will map the emission region in greater detail and monitor any variability. The results will help determine whether such long‑lasting transients are common or represent a rare outlier.