China’s “Sky Eye” Telescope reveals hidden binary source of Fast Radio Bursts

China’s “Sky Eye” Telescope reveals hidden binary source of Fast Radio Bursts. (Image: Canva)

• Astronomers found repeating fast radio bursts come from binary star systems
• Study tracked FRB 220529A, revealing a magnetar and companion star interaction
• Discovery helps explain origins of mysterious cosmic radio flashes

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Astronomers have uncovered a major clue about one of the universe’s strangest mysteries. Fast radio bursts (FRBs) are sudden, intense flashes of radio waves from distant galaxies. These waves come from not just one but the pairs of stars.

A recent study shows that a repeating FRB is part of a binary system, likely involving a magnetar and a companion star. This discovery sheds light on a cosmic phenomenon that has puzzled scientists for more than a decade.

What Are Fast Radio Bursts?

FRBs are millisecond-long bursts of radio energy from faraway galaxies. Most appear only once, making them extremely hard to study. Some, however, repeat, offering scientists a rare chance to investigate their origins.

Despite decades of observations, the source of these bursts remained a mystery. Now, this new research provides strong evidence that star interactions can produce repeating FRBs.

How Did Scientists Make This Discovery?

A team monitored FRB 220529A, located 2.5 billion light-years away, for 17 months. They used China’s FAST telescope and Australia’s Parkes telescope. During their observations, they detected a sudden change in the signal called an RM flare.

This flare occurs when plasma from a companion star passes between the FRB source and Earth. The data suggested that the FRB is part of a binary system, rather than being produced by a lone star.

The Hidden Mechanics of the Universe

At the heart of repeating FRBs is often a magnetar. This is a type of neutron star with a mind-bogglingly strong magnetic field. When magnetars interact with a companion star, they produce bursts of energy that travel across space.

Plasma from the companion star can interfere with the radio waves. This creates unique signal patterns known as RM flares. By analyzing these flares, scientists can trace how the bursts were shaped long before they reached our telescopes.

The Journey Begins with FRB 220529A

FRB 220529A is the latest repeating burst under study. It is located 2.5 billion light-years from Earth. It was first spotted in archival data, but astronomers only recently tracked it consistently over 17 months.

Long-term monitoring revealed sudden changes in the radio signal, the RM flare. This flame was pointing to an unseen stellar companion influencing the magnetar’s bursts.

Mapping the Universe One Flash at a Time

Astronomers are now planning expanded surveys of repeating FRBs to determine how common these binary-induced bursts are. By observing more systems over longer periods, they hope to predict when and how these flashes occur. This offer insights into the extreme physics of magnetars.