Near-infrared study finds no clear counterpart to mysterious gamma-ray source

• Spanish astronomers have conducted a near-infrared study of an ultra-high energy gamma-ray source designated LHAASO J2108+5157. • The new study, published February 11 on the arXiv preprint server, tries to unravel the mysterious nature of this source.

Article Summaries:

• Spanish astronomers have carried out a near‑infrared survey of the ultra‑high‑energy gamma‑ray source LHAASO J2108+5157, one of the most energetic objects detected by the LHAASO observatory. The study, posted to the arXiv preprint server on February 11, aimed to identify a counterpart that could explain the source’s mysterious emission. Despite deep imaging and careful analysis, the team found no clear near‑infrared counterpart, leaving the origin of the gamma‑ray signal unresolved. The result highlights the difficulty of linking such extreme gamma‑ray sources to known astronomical objects.

Sources:

• https://phys.org/news/2026-02-infrared-counterpart-mysterious-gamma-ray.html