Jul 12 – 23, 2021
Online
Europe/Berlin timezone

A Time-Variability Test for Candidate Neutrino Sources

Jul 15, 2021, 6:00 PM
1h 30m
05

05

Talk NU | Neutrinos & Muons Discussion

Speaker

Pranav Dave (Georgia Institute of Technology)

Description

Recent studies with IceCube have shown signs of a time-integrated flux of astrophysical neutrinos from point-like sources such as TXS 0506+56 and NGC 1068. Time-variability of this neutrino emission from TXS 0506+56 has been studied extensively by assuming a temporal profile of the possible flare(s) or searching for temporal neutrino correlation with other electromagnetic counterparts. However, experimental evidence of the temporal profile of an astrophysical neutrino signal, besides the TXS 0506+56 source, remains lacking. In this study, we present a new KS-test based method for investigating time-variability. This new method complements the existing time-dependent search methods with a test for arbitrary time-variability, independent of an assumed temporal profile or electromagnetic counterpart. Additionally, this method provides a diagnostic tool for characterizing point-like source candidates in IceCube by distinguishing variable from steady neutrino emission and we show results of applying this method to a small catalog of candidate blazars.

Keywords

IceCube; astrophysical neutrinos; neutrino sources

Subcategory Experimental Results
Collaboration IceCube

Primary author

Pranav Dave (Georgia Institute of Technology)

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