International Conference
The multi-messenger astronomy:
gamma-ray bursts, search for electromagnetic counterparts to
neutrino events and gravitational waves

7-14 October 2018

Statistical study of spin dynamics in precessing binary black holes in eccentric orbits Pankaj Jain, Khun Sang Phukon, Anuradha Gupta, Sukanta Bose

Abstract

      We study the evolution of spins of binary black holes taking eccentricity into account. We are interested in determining the probability that these binaries may get locked in spin-orbit resonance configurations. We numerically evolve a large set of binaries starting from a large separation by using post-Newtonian approximation. The initial spin distribution is taken to be isotropic as is expected in many astrophysical environments. We find that a large fraction of the binaries get locked into or oscillate about the spin-orbit resonance configuration t owards the end of inspiral. This can be tested in future observations which, using our results, will allow us to deduce the initial spin distributions.

Reference:
Pankaj Jain, Khun Sang Phukon, Anuradha Gupta, Sukanta Bose "Statistical study of spin dynamics in precessing binary black holes in eccentric orbits", in Proceedings of the International Conference "The multi-messenger astronomy: gamma-ray bursts, search for electromagnetic counterparts to neutrino events and gravitational waves", Russia, Nizhnij Arkhyz (SAO RAS), Terskol (BNO INR RAS), October, 7 - 14, 2018, Publishing house SNEG, Pyatigorsk, 2019, ISBN 978-5-6041711-1-0, pp.83-87.
DOI: 10.26119/SAO.2019.1.35514
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