How to Hear a Swarm of Black Holes ⚡ экспресс
Original: "Popcorn in the sky: Identifying primordial black holes in the gravitational-wave background"
By the hum of gravitational waves, you can tell if it was born from a swarm of primordial black holes.
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Tiny black holes born at the very beginning of the Universe can create a cosmic hum, similar to the noise of a traffic jam. Scientists have figured out how, based on the character of this hum—its volume and frequency—to reliably calculate these ancient objects and peer into the infancy of the cosmos.
🎯 A primordial [tag:black_hole]black hole[/tag] can be the size of an atom but weigh as much as a mountain.