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Complex orbital dynamics of a double neutron star system revolving around a massive black hole

Remmen, Grant N. and Wu, Kinwah (2013) Complex orbital dynamics of a double neutron star system revolving around a massive black hole. Monthly Notices of the Royal Astronomical Society, 430 (3). pp. 1940-1955. ISSN 0035-8711. doi:10.1093/mnras/stt023.

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We investigate the orbital dynamics of hierarchical three-body systems containing a double neutron star system orbiting around a massive black hole. These systems show complex dynamical behaviour because of relativistic coupling between orbits of the neutron stars in the double neutron star system and the orbit of the double neutron star system around the black hole. The orbital motion of the neutron stars around each other drives a loop mass current, which gives rise to gravitomagnetism. Generally, gravitomagnetism involves a rotating black hole. The hierarchical three-body system that we consider is an unusual situation in which black hole rotation is not required. Using a gravitoelectromagnetic formulation, we calculate the orbital precession and nutation of the double neutron star system. These precession and nutation effects are observable, thus providing probes to the space–time around black holes as well as tests of gravitoelectromagnetism in the framework of general relativity.

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Remmen, Grant N.0000-0001-6569-8866
Additional Information:© 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2013 January 2. Received 2013 January 2; in original form 2012 October 5. First published online: February 7, 2013. We thank the referee for constructive comments and for helpful suggestions in obtaining more reliable estimates for the compact objects and DNS in the centres of galaxies.
Subject Keywords:black hole physics; gravitation; gravitational waves; binaries: close; stars: neutron; pulsars: general
Issue or Number:3
Record Number:CaltechAUTHORS:20130628-083040148
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39133
Deposited By: Tony Diaz
Deposited On:28 Jun 2013 16:03
Last Modified:09 Nov 2021 23:42

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