Fig. 3: Identification of SLGW pairs.
From: An interference-based method for the detection of strongly lensed gravitational waves
This figure displays the results of finding SLGW pairs. The y axis represents the FAP, defined in equation (7) for doublet and equation (8) for quadruplet. The x axis corresponds to the event index. The divide between the differently coloured regions corresponds to FAP = 10−2, 10−4 and 10−6, respectively. The circles and stars indicate the FAP of doublets and quadruplets, respectively. Grey represents FAP >0.01, red represents 10−4 < FAP < 0.01 and purple represents FAP <10−4. We use a successful identification threshold of FAP <10−2 for doublets and FAP <10−6 for quadruplets. Applying these criteria, we identified two double-image systems and one quadruple-image system, which are represented by solid circles and a solid star, respectively.
