Swift telescope spots gamma-ray burst that kept flaring for 27 days

A gamma-ray burst detected by NASA’s Swift telescope in July 2022 continued producing X-ray flares for 27 days in its own time frame, according to a preprint led by the University of Birmingham. Researchers said the unusually long stretch of activity sets a new record for late flaring.

What astronomers found

The burst, identified through Swift’s observations, remained active far longer than similar events usually do. In the burst’s own time frame, the X-ray flares lasted 27 days, which the researchers said is about 20 days longer than the previous record.

That makes the event notable not just for being bright, but for staying active deep into the time after the initial burst.

Why the result stands out

Gamma-ray bursts are among the most powerful explosions seen in space, but the source notes that this one behaved in an unusual way long after the main event. The team said the late activity is still not understood.

• Detected: July 2022
• Telescope: NASA’s Swift
• Late flaring duration: 27 days in the burst’s own time frame
• Previous record: About 20 days shorter
• Study status: Reported in a preprint

What remains unknown

The researchers, led by the University of Birmingham, said they do not yet know what powered the burst’s extended flaring. The source does not say whether later work has identified the mechanism, only that it remains an open question.

For ordinary readers, the main takeaway is that even after the initial flash from a gamma-ray burst, some events can keep sending out high-energy signals far longer than expected. That makes them useful for studying how these extreme explosions evolve over time.

Why it matters

Findings like this help astronomers compare one burst with another and test ideas about what happens after the main explosion. A record-setting case gives scientists a rare data point for understanding how long these events can stay active and what may drive their later flares.

Source: Inshorts