Numerical simulations of oscillating tori in a pseudo-Newtonian potential
Varadarajan Parthasarathy, Antonios Manousakis, Wlodek Kluzniak
TL;DR
This paper uses numerical simulations to study oscillating hydrodynamical tori in a pseudo-Newtonian potential, aiming to understand high-frequency quasi-periodic oscillations in black hole binaries.
Contribution
It models and analyzes the eigenmodes of hydrodynamical tori in a pseudo-Newtonian potential, linking simulations to astrophysical QPO observations.
Findings
Identification of eigenmodes in simulated tori
Relevance to high-frequency QPOs in black hole binaries
Insights into oscillation behaviors of accretion tori
Abstract
We have modeled hydrodynamical tori in the Klu{\'z}niak-Lee pseudo-Newtonian potential. The tori in equilibrium were perturbed with uniform sub-sonic velocity fields: vertical, radial and diagonal respectively, and allowed to evolve in time. We identify the eigenmodes corresponding to those of slender tori. The results of our simulations are relevant to the investigation of high-frequency quasi-periodic oscillations observed in stellar-mass black hole binaries.
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Taxonomy
TopicsFluid Dynamics and Vibration Analysis · Fluid Dynamics Simulations and Interactions · Astrophysical Phenomena and Observations