Multimessenger NuEM Alerts with AMON

TL;DR

AMON's real-time multimessenger alert system, NuEM, combines gamma-ray and neutrino data to identify astrophysical events by analyzing sub-threshold signals for potential gamma-ray counterparts.

Contribution

This paper introduces the NuEM alert channel within AMON, enabling coincidence analysis of gamma-ray and neutrino data using sub-threshold events for the first time.

Findings

Successful implementation of the NuEM alert system.

Detection of potential gamma-ray counterparts to neutrino events.

Enhanced sensitivity through sub-threshold data analysis.

Abstract

The Astrophysical Multimessenger Observatory Network (AMON), has developed a real-time multi-messenger alert system. The system performs coincidence analyses of datasets from gamma-ray and neutrino detectors, making the Neutrino-Electromagnetic (NuEM) alert channel. For these analyses, AMON takes advantage of sub-threshold events, i.e., events that by themselves are not significant in the individual detectors. The main purpose of this channel is to search for gamma-ray counterparts of neutrino events. We will describe the different analyses that make up this channel and present a selection of recent results.