Nowadays there are satellites with omnidirectional gamma-ray detectors to detect gamma-ray bursts, so that optical and other telescopes can be turned on them.

Nowadays there are satellites with omnidirectional gamma-ray detectors to detect gamma-ray bursts, so that optical and other telescopes can be turned on them. Its a question of if these would be sensitive enough, but I think we can only expect the detection satellites to improve over time.