Record breaker! Astronomers spot powerful cosmic explosion that lasted 27 days

Astronomers have discovered a record-breaking gamma-ray burst (GRB) that lasted an unprecedented 27 days, more than twice as long as the previous record holder. This extraordinary event, designated GRB 220706A, was observed on July 6, 2022. The central engine sustaining this extraordinary burst remains unknown, making it all the more intriguing for researchers.

Long-lasting X-ray flares are common following GRBs, but this particular GRB's flaring began around 27 days after the initial explosion, marking a new milestone in the field. GRB 220706A is classified as an ultra-long GRB, a rare class of cosmic explosions where the powering engine remains active for an exceptionally extended period. The precise nature of this central engine, which fuels the GRB, is still a mystery, adding to the excitement surrounding this extraordinary cosmic event.

One of the leading hypotheses is that the GRB is powered by a magnetar, a neutron star with an incredibly powerful magnetic field that rotates at an astonishing rate of around 1,000 times per second. Another possibility is that the GRB is associated with a super-luminous supernova, which is thought to be driven by magnetar activity. However, the exact cause of this extraordinary GRB remains elusive, as current models struggle to explain the prolonged activity observed.

The discovery of GRB 220706A provides valuable insights into the nature of these rare cosmic explosions and challenges existing theories about their origins. By studying this record-breaking event, researchers hope to shed light on the mechanisms powering these powerful cosmic phenomena and potentially uncover new insights into the universe's most extreme environments.