Speaker
Description
The recent detections of the afterglow phase of long gamma-ray bursts (lGRBs) at very high energies (VHE, >100 GeV) mark a significant advance in astrophysics of transient phenomena, offering deeper insights into the acceleration mechanisms, jet structure, and physical processes driving GRB emission. In the multi-messenger landscape, both high-energy neutrino and gravitational-wave detections are providing new insights into the physics of extreme cosmic accelerators, and highlight the need for rapid and broadband follow-up observations.
The Large-Sized Telescope (LST-1), the first prototype telescope for the Cherenkov Telescope Array Observatory (CTAO), is particularly well suited for real-time rapid follow-up of transients with its fast slewing capabilities, large effective area, and exceptional sensitivity below 100 GeV. In this contribution, we present the latest achievements of the transient observational program with LST-1, which is now in advanced commissioning on La Palma, Canary Islands. We outline the observational strategies in place and describe the dynamic handling of events by the transient handler of LST-1 (e.g., its ability to handle poorly localised events including gravitational waves, GRBs and neutrinos). We present the key results from transient observation campaigns conducted so far, discuss the lessons learned, and outline the promising prospects for the future LST-1+MAGIC combined transient program with fast response, via a unique Transient Handler.
| Collaboration(s) | LST Collaboration |
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