Summary

Using NASA's Chandra X-ray spacecraft, astronomers have performed deep X-ray observations of a galactic globular cluster known as NGC 6540. The new observational campaign , described June 1 on the preprint server arXiv , focused on disentangling the nature of a peculiar X-ray flare emitted by the cluster about two decades ago. Globular clusters (GCs) are collections of tightly bound stars orbiting galaxies. Astronomers see them as natural laboratories for studies of the evolution of stars and galaxies.

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