# Reconstructing the supernova bounce time with neutrinos in IceCube

## TL;DR

This paper demonstrates that IceCube can accurately reconstruct the bounce time of a supernova within a few milliseconds using neutrino signals, which is crucial for multi-messenger astronomy involving gravitational waves.

## Contribution

It extends previous studies by quantifying IceCube's timing precision for supernova neutrinos and analyzing the impact of neutrino oscillations on timing accuracy.

## Key findings

- IceCube can reconstruct supernova bounce time within ±3.5 ms at 10 kpc.
- Timing uncertainty increases with the square of the distance.
- Neutrino flavor oscillations can cause a few millisecond offset in bounce time reconstruction.

## Abstract

Generic model predictions for the early neutrino signal of a core-collapse supernova (SN) imply that IceCube can reconstruct the bounce to within about +/- 3.5 ms at 95% CL (assumed SN distance 10 kpc), relevant for coincidence with gravitational-wave detectors. The timing uncertainty scales approximately with distance-squared. The offset between true and reconstructed bounce time of up to several ms depends on the neutrino flavor oscillation scenario. Our work extends the recent study of Pagliaroli et al. [PRL 103, 031102 (2009)] and demonstrates IceCube's superb timing capabilities for neutrinos from the next nearby SN.