12–23 Jul 2021
Online
Europe/Berlin timezone

Model independent search for transient multimessenger events with AMON using outlier detection methods

16 Jul 2021, 12:00
1h 30m
06

06

Poster MM | Multi-Messenger Discussion

Speaker

Timothée Grégoire (Penn State University)

Description

The Astrophysical Multimessenger Observatory Network (AMON) receives subthreshold data from multiple observatories in order to look for coincidences. Combining more than two datasets at the same time is challenging because of the range of possible signals (time windows, energies, number of events…). However, outlier detection methods can circumvent this issue by identifying any signal divergent from the background (scrambled data).
We propose to use these methods to make a model independent combination of the subthreshold data of neutrino and gamma ray experiments. Using the python outlier detection (PyOD) package, it allows us to test several methods from a simple "k-nearest neighbours" algorithm to the most sophisticated GAAL (Generative Adversarial Active Learning) neural networks which generates data points to better identify them.

Keywords

gamma rays; neutrinos; multi-messenger

Subcategory Experimental Methods & Instrumentation
Collaboration other (fill field below)
other Collaboration AMON

Primary author

Timothée Grégoire (Penn State University)

Presentation materials