22 unexplained radio signals from the “star cemetery” were caught

(NLĐO) - An observatory in Canada has detected bursts of radio signals emanating from an 11-billion-year-old world "rising from the dead".

CHIME, a radio telescope array located in British Columbia, Canada, has detected 22 unusual signals classified as "fast radio bursts" (FRBs), which are rapid, explosive radio signals that can travel very far in intergalactic space.

The 22 FRBs mentioned above originated from a single, and most absurd, location: an 11-billion-year-old "star graveyard."

The Milky Way (left) is placed next to a dead galaxy similar to the one that emitted the strange signals - Photo: NASA/ESA

According to Live Science, a "star graveyard" is how scientists describe a dead galaxy, meaning one that stopped forming stars a long time ago.

Unlike the Milky Way, the galaxy containing Earth, these galaxies are typically quiet and faint. And no current astronomical theory can explain why they emit FRB signals.

FRBs are thought to accompany supernova explosions, signaling the death of massive stars.

Therefore, they must come from places where stars are still forming and dying, that is, young, vibrant galaxies with enough gas and dust to fuel the birth of stars.

However, the 22 signals that CHIME detected clearly originated from the outskirts of a long-dead galaxy, which scientists describe as its "rising from the grave" behavior.

"The observations tell us that there must be some other way to create FRBs. This discovery contradicts the picture we have of FRBs so far," said Dr. Tarraneh Eftekhari from Northwestern University (USA), co-author of two studies on the series of strange signals.

Source: https://nld.com.vn/bat-duoc-22-tin-hieu-radio-kho-giai-thich-tu-nghia-dia-sao-196250221112226121.htm