Researchers claim to have discovered 260-million-year-old radio galaxy fossils

The issue is that they very quickly vanish past our capacity to detect them, making it difficult to locate examples older than 200 million years from our perspective. Such “relics,” on the other hand, can record valuable information about the conditions under which they formed, noted the researchers.

260 million years old lobes

The hot, relaxed medium of a low-mass and quiet galaxy cluster, according to Paul and his colleagues, is one environment likely to increase their chances of survival.

They looked for such an environment in galaxy clusters using the Giant Metrewave Radio Telescope in India, and found one in Abell 980, which is about 2 billion light-years away.

They discovered faint radio structures there, lobes that were able to age to about 260 million years old and span 1.2 million light-years.

The next step was to figure out where the lobes had come from.

Krishna and his colleagues traced it back to the brightest galaxy in the cluster in the second paper. It’s now in the center of Abell 980.

However, Krishna and his team indicated that it wasn’t always there.

It migrated 250,000 light-years from the position where it emitted the first pair of lobes over 260 million years ago or so. The galaxy then erupted again in the cluster center, producing a second pair of lobes, documented the Pune research team.

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