Published May 1, 2026 | Version v5
Preprint Open

ORAC-NT: A Template-Free Dual-Channel Detector for Gravitational Wave Transients

Authors/Creators

Description

We present ORAC-NT, a dual-channel anomaly detector 
for gravitational wave strain data operating without 
waveform templates. The detector combines RMS energy 
(sensitive to BBH impulsive signals) and the ORAC H 
energy-entropy metric (sensitive to BNS extended signals). 
Validated on GW150914 and GW170817 from LIGO GWOSC data.
GW150914 detected via RMS at t=+0.010s; GW170817 detected 
via ORAC H at t=-0.260s.

Files

orac_et_far_sigma.png

Files (253.7 kB)

Name Size Download all
md5:6955298aa54ebc6469ff0016116973a0
194.8 kB Preview Download
md5:2975d8239985d1ceafdea5e40cdf5ac7
58.9 kB Preview Download

Additional details

Related works

Is supplement to
Preprint: 10.5281/zenodo.19019599 (DOI)

Dates

Updated
2026-05-01

References