Oct 23 – 27, 2023
Istituto Veneto di Scienze, Lettere ed Arti
Europe/Rome timezone
opening day available in streaming on the YouTube channel of the Physics and Astronomy Dpt. of the University of Padova: https://youtu.be/t_9s2ALOFGQ

Realtime Alerts and Archival Searches for Time-Evolving Neutrino Flares Using the IceCube Gamma-Ray Follow-Up (GFU) Platform

Oct 24, 2023, 3:20 PM
20m
Palazzo Loredan,Sala delle Adunanze

Palazzo Loredan,Sala delle Adunanze

Contributed Parallel Talk Neutrino Telescopes & Multi-messenger Neutrino Telescopes

Speaker

Sarah Louise Mancina (Univeritá degli Studi di Padova)

Description

The discovery of a high energy neutrino from IceCube coincident in time with flaring activity in gamma-rays from TXS 0506+056 solidified neutrinos as an integral part of the emerging field of multimessenger astrophysics. From the direction of the source, an archival neutrino flare was also identified and contributed to the significance of TXS 0505+056 as a neutrino source. An alert stream for time-evolving neutrino flares comprised of sub-threshold events had been developed for IceCube; however, TXS 0506+056 was not among the considered sources due to a lack of redshift information. These flare alerts were optimized to look for AGN flares from nearby sources such that imaging air Cherenkov telescopes (IACTs) could follow-up the alerts by looking for high energy gamma-ray emission. Therefore, lists of sources for each IACT were developed and monitored for neutrino flares. Additionally, an all-sky version of the alert was developed to provide a model independent search but requires a higher threshold to trigger an alert due to the increased number of trials. In this presentation, we discuss the structure of the alert platform and also give results from archival searches using the analysis. We will also cover future developments for this neutrino flare alert stream including improving the performance and also expanding the scope.

Primary author

Sarah Louise Mancina (Univeritá degli Studi di Padova)

Presentation materials