Speaker
Description
Since 2016, the IceCube Neutrino Observatory has operated a real-time alert system to identify high-energy neutrino events and promptly notify the astronomical community for electromagnetic and gravitational-wave follow-up. A major success of the program was the detection, a year later, of a high-energy neutrino from the blazar TXS 0506+056, demonstrating the power of rapid multi-messenger observations. In this talk, I will give an overview of the IceCube realtime program, including all alert types and follow-up strategies, with a focus on track-like events. In September 2024, improvements in event reconstruction significantly enhanced the angular resolution of track alerts and improved sensitivity and coverage. In particular, the 50%(90%) angular uncertainty on tracks has been reduced by a factor of ~5(~4). In this talk, I will discuss the updated system performance and outline prospects for future astrophysical neutrino discoveries in the era of multi-messenger astronomy.
