Inverse-chirp imprint of gravitational wave signals in scalar tensor theory Chao-Qiang Geng, Hao-Jui Kuan and Ling-Wei Luo Eur. Phys. J. C, 80 8 (2020) 780 Published online: 26 August 2020 DOI: 10.1140/epjc/s10052-020-8359-y