Novel technique for supernova detection with IceCube
L. Demiroers, M. Ribordy, M. Salathe

TL;DR
This paper explores an analytical approach to enhance supernova detection in IceCube by analyzing correlated hits, aiming to improve spectral resolution and localization, and discusses potential detector upgrades for increased sensitivity.
Contribution
It introduces an analytical method for supernova detection via correlated hits in IceCube, providing insights into spectral features and localization, and evaluates detector extension strategies.
Findings
Correlated hit analysis can reveal supernova neutrino spectral features.
A denser detector array improves supernova localization and detection range.
Enhanced sensor parameters are necessary for routine detection at extragalactic distances.
Abstract
The current supernova detection technique used in IceCube relies on the sudden deviation of the summed photomultiplier noise rate from its nominal value during the neutrino burst, making IceCube a Megaton effective detection volume - class supernova detector. While galactic supernovae can be resolved with this technique, the supernova neutrino emission spectrum remains unconstrained and thus presents a limited potential for the topics related to supernova core collapse models. The paper elaborates analytically on the capabilities of IceCube to detect supernovae through the analysis of hits in the detector correlated in space and time. These arise from supernova neutrinos interacting in the instrumented detector volume along single strings. Although the effective detection volume for such coincidental hits is much smaller (kton, about the scale of SuperK), a…
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