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Elevated $p_{\rm astro}$: increased significances with multi-messenger coincidences
- Publication Year :
- 2024
-
Abstract
- Coincident multi-messenger observation of cosmic sources can offer numerous benefits. One significant advantage is enhancing the detection significance of separate detectors by correlating their data and assuming a joint emission. We have formulated an approach for updating the Bayesian posterior probability of an astrophysical origin, namely $p_{\rm astro}$, relying on multi-messenger coincidences. We demonstrated this with candidate coincident gravitational waves and high-energy neutrinos. Applying our method to the public data of candidate coincident high-energy neutrinos with subthreshold gravitational-wave triggers, we found that in the case of highly energetic neutrino coincidences, $p_{\rm astro}$ can increase from approximately $\sim 0.1$ to $\sim 0.9$. This marked improvement makes subthreshold detections much more confident.<br />Comment: 7 pages, 1 figure, 1 table
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2407.08732
- Document Type :
- Working Paper