Harvard-Smithsonian Captures Gamma-Ray Burst in 4 Minutes at Millimetre Wavelengths
Updated
Updated · Sky at Night Magazine · Jul 1
Harvard-Smithsonian Captures Gamma-Ray Burst in 4 Minutes at Millimetre Wavelengths
3 articles · Updated · Sky at Night Magazine · Jul 1
Summary
A Submillimeter Array team on Maunakea began observing a gamma-ray burst just 4 minutes after NASA Swift detected it on Jan. 26, setting the earliest millimetre-wave record for such an event.
A Swift automated alert reached the on-duty operator within 90 seconds, and the array had the target locked by 13 minutes while software was already generating near-real-time images.
Two days later, follow-up observations found the source had faded, supporting the conclusion that the array caught the burst's afterglow rather than a persistent source.
Researchers said the faster response could shrink to 2 to 3 minutes and give astronomers a new way to study the ejecta and jet physics behind some of the universe's brightest explosions.
With telescopes now catching stellar explosions in minutes, what secrets of the universe’s most violent events will be revealed first?
As ground-based telescopes achieve record speed, is humanity’s quest to understand cosmic explosions ultimately destined for observatories in space?
SMA’s 4-Minute Rapid Response to GRB 260127A: A New Era for Early-Time Gamma-Ray Burst Observations
Overview
On January 26, 2026, the Neil Gehrels Swift Observatory detected GRB 260127A and sent an alert, which reached Submillimeter Array (SMA) operators within 90 seconds. Thanks to this rapid communication, the SMA was able to pivot almost immediately and began observing the burst within four minutes—an unprecedented speed for such a complex telescope. Near real-time data analysis started alongside the observations, allowing astronomers to capture valuable early-time information about the GRB afterglow. This breakthrough marks a new era in astronomy, enabling scientists to study the earliest moments of powerful cosmic explosions.