Search for neutrinos from the tidal disruption events AT2019dsg and AT2019fdr with the ANTARES telescope

TL;DR

This study searches for neutrinos from two tidal disruption events, AT2019dsg and AT2019fdr, using the ANTARES telescope, but finds no significant signals, setting upper limits on neutrino flux.

Contribution

It presents the first ANTARES search for neutrinos from these TDEs and establishes upper limits, contributing to multi-messenger astrophysics.

Findings

No significant neutrino detection from the TDEs.

Upper limits on neutrino flux and fluence are established.

Supports the rarity or faintness of neutrino emission from TDEs.

Abstract

On October 1, 2019, the IceCube Collaboration detected a muon track neutrino with high probability of being of astrophysical origin, IC191001A. After a few hours, the tidal disruption event (TDE) AT2019dsg, observed by the Zwicky Transient Facility (ZTF), was indicated as the most likely counterpart of the IceCube track. More recently, the follow-up campaign of the IceCube alerts by ZTF suggested a second TDE, AT2019fdr, as a promising counterpart of another IceCube muon track candidate, IC200530A, detected on May 30, 2020. These are the second and third associations between astrophysical sources and high-energy neutrinos after the compelling identification of the blazar TXS 0506+056. Here, the search for ANTARES neutrinos from the directions of AT2019dsg and AT2019fdr using a time-integrated approach is presented. As no significant evidence for space clustering is found in the ANTARES data, upper limits on the one-flavour neutrino flux and fluence are set.