Synergies Found Between Technosignature and UHE Neutrino Searches

This paper explores the methodological synergies between radio technosignature searches and radio-based ultra-high energy (UHE) neutrino experiments. Both fields face the challenge of identifying rare signals within large datasets dominated by noise and radio-frequency interference (RFI). The authors propose adapting continuous-wave (CW) mitigation techniques, such as catalog-based time-domain sine subtraction, used in UHE neutrino experiments for technosignature pipelines. This involves restricting subtraction to documented persistent contaminants to improve broadband transient visibility while preserving uncataloged narrowband candidates. Furthermore, the paper identifies a structural equivalence between spatiotemporal clustering in UHE neutrino experiments and direction/cadence-based RFI rejection in radio SETI. A joint feature space incorporating direction, time, frequency, bandwidth, duration, and polarization is suggested. The authors advocate for background-only anomaly ranking as a second stage for morphology-agnostic candidate triage. This 'preserve-then-rank' workflow aims to facilitate cross-community collaboration and accelerate rare-event discovery. The implications for the space sector include potentially improved methods for detecting faint signals from space, which could be relevant for satellite communication and space situational awareness. The proposed techniques could also be applied to analyze data from space-based telescopes and detectors.

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