Cumulative Shift of Periastron Time of Binary Pulsar with Kozai-Lidov Oscillation

Autor:	Suzuki, Haruka, Gupta, Priti, Okawa, Hirotada, Maeda, Kei-ichi
Rok vydání:	2019
Předmět:	General Relativity and Quantum Cosmology Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1093/mnrasl/slz058
Popis:	We study a hierarchical triple system with the Kozai-Lidov mechanism, and analyse the cumulative shift of periastron time of a binary pulsar by the emission of gravitational waves. Time evolution of the osculating orbital elements of the triple system is calculated by directly integrating the first-order post-Newtonian equations of motion. The Kozai-Lidov mechanism will bend the evolution curve of the cumulative shift when the eccentricity becomes large. We also investigate the parameter range of mass and semi-major axis of the third companion with which the bending of the cumulative-shift curve could occur within 100 years. Comment: 6 pages, 3 figures, accepted by MNRAS letters
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1903.00287 Zobrazit plný text záznamu View this record from Arxiv