Deviation in stellar trajectory induced by asymmetry in partial tidal disruption

Author:

Banerjee Pritam1,Garain Debojyoti1,Chowdhury Shaswata1ORCID,Singh Dhananjay1,Joshi Rohan1,Sarkar Tapobrata1

Affiliation:

1. Department of Physics, Indian Institute of Technology Kanpur , Kanpur 208016, India

Abstract

ABSTRACT We study partial tidal disruption and present a quantitative analysis of the orbital dynamics of the remnant self-bound core. We perform smoothed particle hydrodynamical simulations to show that partial disruption of a star due to the tidal field of a black hole leads to a jump in the specific orbital energy and angular momentum of the core. It directly leads to deviation in the core’s trajectory apart from getting a boost in its velocity. Our analysis shows that the variations in the specific orbital energy and angular momentum are higher when the pericenter distance is lower. We conclude that higher mass asymmetry of the two tidal tails increases the magnitude of the trajectory deviations. We show that observable deviations are only possible when mass ratio $q \lesssim \mathcal {O}(10^3)$ , which indicates the range of intermediate-mass black holes.

Funder

CSIR

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Tidal disruption of white dwarfs in a modified gravity theory with SPH;Journal of Cosmology and Astroparticle Physics;2023-11-01

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