Review of the online analyses of multi-messenger alerts and electromagnetic transient events with the ANTARES neutrino telescope

TL;DR

This paper reviews ANTARES telescope's real-time multi-messenger alert analyses from 2014 to 2022, highlighting its role in detecting neutrinos coincident with various astrophysical transient events and improving source localization.

Contribution

It provides a comprehensive summary of ANTARES's follow-up analyses of multi-messenger alerts over eight years, emphasizing its contributions to transient astrophysics.

Findings

No significant neutrino detections coincident with alerts.

Enhanced localization of gravitational wave sources.

Validation of real-time multi-messenger analysis methods.

Abstract

By constantly monitoring at least one complete hemisphere of the sky, neutrino telescopes are well designed to detect neutrinos emitted by transient astrophysical events. Real-time searches with the ANTARES telescope have been performed to look for neutrino candidates coincident with gamma-ray bursts detected by the Swift and Fermi satellites, highenergy neutrino events registered by IceCube, transient events from blazars monitored by HAWC, photon-neutrino coincidences by AMON notices and gravitational wave candidates observed by LIGO/Virgo. By requiring temporal coincidence, this approach increases the sensitivity and the significance of a potential discovery. Thanks to the good angular accuracy of neutrino candidates reconstructed with the ANTARES telescope, a coincident detection can also improve the positioning area of non-well localised triggers such as those detected by gravitational wave interferometers. This paper summarises the results of the follow-up performed by the ANTARES telescope between 01/2014 and 02/2022, which corresponds to the end of the data taking period.