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T: Fachverband Teilchenphysik
T 66: Neutrino astronomy 3
T 66.5: Vortrag
Mittwoch, 6. März 2024, 17:00–17:15, Geb. 30.23: 6/1
Search for neutrinos from AGN using a data-driven source selection — •Sebastian Schindler1 and Thorsten Glüsenkamp1,2 for the IceCube collaboration — 1ECAP, FAU Erlangen-Nürnberg, Germany — 2Uppsala University, Sweden
The IceCube Neutrino Observatory is a gigaton-volume high-energy neutrino detector. One of the main goals is the association of the previously discovered astrophysical neutrino flux with specific source classes. A few sources have been found (NGC 1068 and TXS 0506+056), which belong to certain classes of Active Galactic Nuclei (AGN). However, the underlying physical processes of neutrino production remain poorly understood. One problem for neutrino-source searches comes from the use of historically-driven class definitions of AGN, which are based on specific spectral properties that are not necessarily optimal for the selection of potential neutrino sources.
Using multi-wavelength data in a data-driven approach, we aim to define a source selection in a way that emphasizes intrinsic physical properties and mostly disregards the general AGN classification. This will allow to identify potential neutrino sources similar in physical properties to those associated with the currently detected sources. Later, a statistical analysis will be performed to test the correlation of neutrinos with these previously defined source selections.
This talk will present the recent progress in this study consisting of exploratory data analysis of some multi-wavelength data. Cross-matched x-ray (2RXS) and infrared (AllWISE) catalogs are analyzed using the clustering algorithm HDBScan in a high-dimensional space.
Keywords: neutrinos; AGN; multi-wavelength; IceCube