2023/02/20 by Wang, Baoxiang, Shi, Changfu, Zhang, Jian-dong +2 · 1 citation
#FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc)
paper · doi:10.48550/arxiv.2302.10112
In this paper, we revisit the problem of using gravitational wave data to test the Einstein-dilation-Gauss-Bonnet theory, by using nine selected gravitational wave events from GWTC-3. Compared with existing work, we are taking into account the higher harmonics more properly and we also study the contribution of the merger-ringdown data. Using the inspiral data alone, we find that the best result is from GW200115, giving √(|α|) < 1.1 km, which is about 17% tighter than the previous best result. We also notice the possible existence of a simple unexpected relation among the constraints from different events. Several combinations of the selected events give √(|α|) ≤ 1.0 km. The result is further improved when the merger-ringdown data is also included, using two phenomenological schemes, giving √(|α|) < 0.87 km for GW200115 in the best case scenario.