Telescope Catches Cosmic Explosion Faster Than Ever Before

In January 2026, astronomers achieved a major breakthrough in observing cosmic explosions. The Submillimeter Array on Maunakea, Hawaii successfully demonstrated a new rapid-response system for tracking gamma-ray bursts. Scientists from the Center for Astrophysics captured the earliest observations of a GRB ever made at millimeter and submillimeter wavelengths. This milestone marks the first time such an event was tracked at these frequencies within minutes of detection.

Gamma-ray bursts represent the most powerful explosions in the universe, occurring when massive stars collapse or when compact objects like neutron stars merge. While X-ray and optical telescopes have long been capable of rapid follow-up observations, millimeter-wave telescopes have typically lagged behind. The SMA changed this by implementing an automated alert system linked to NASA's Swift Observatory. Upon detecting the gamma-ray flash on January 26, the operator was alerted within 90 seconds. Within four minutes, the telescope began repositioning, and within 13 minutes, it was fully on target.

Garrett Keating, an astrophysicist and deputy director of the SMA, described watching the system operate in real time as an incredible experience. He noted that this rapid response capability represents a significant departure from conventional SMA operations. Ranjani Srinavasan, the interim director, explained that interferometric imaging normally requires extensive processing time. The team believes they can further reduce the response time to just 2-3 minutes. The new capability is roughly 100 times faster than typical millimeter and submillimeter telescope response times.

Sources: phys.org / The Astrophysical Journal Letters