Analyses

This section documents the point source analyses performed with the Lightning Tracks event selection.

All-Sky Scan

A time-integrated all-sky point source scan using the Lightning Tracks selection, both standalone and in combination with DNN Cascades (IceMan). The scan tests every direction on the sky for evidence of a localized neutrino excess above the atmospheric background.

The scan performs per-pixel hypothesis testing on a HEALPix grid (\(N_\mathrm{side} = 128\)), using exact per-ring empirical survival functions via integer ring-index matching—avoiding both interpolation and \(\chi^2\) fallback. Independent scans are run for LT + DNNC (primary), SLT, TLT, and DNNC.

All-Sky Scan

Analysis Repository

The analysis code is maintained in a separate repository:

• Repository: github.com/AlexHarn/lt-analysis
• Framework: Snakemake workflows with csky
• Reproducibility: Apptainer container with pinned dependencies

See the repository README for instructions on running the analyses.