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Manisha Caleb

2 articles · 30 co-authors · latest: 2026-03-09

Radio Message from When the Universe Was Young

A brief radio flash came from a galaxy that existed soon after the Big Bang. The James Webb Space Telescope helped pinpoint its source—a small, clumpy cluster of stars bustling with star birth. This is the first flash traced to an object at such a distance, and it now allows us to study invisible ga
arXiv:2508.01648 · 2025-08-03

Mysterious radio pulsar beats every 36 minutes

Astronomers discovered an unusual radio signal with a 36-minute period. It sent pulses for only eight days, then vanished. Its radio waves oscillated strictly in one plane, and that plane gracefully rotated. Such 'beacons' likely flare up frequently in the Galaxy, but are hard to catch. Unraveling t
arXiv:2603.07857 · 2026-03-09