UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-23 18:12
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Conference: Bucharest University Faculty of Physics 2023 Meeting


Section: Atomic and Molecular Physics. Astrophysics. Applications


Title:
Simulating the gravitational interactions of N bodies in 3D and modelling the orbit of the Sun and neighbouring stars in the Milky Way potential using Gaia data


Authors:
Maxim ANDRONIC


Affiliation:
University of Bucharest, Faculty of Physics, 405 Atomistilor Street, P.O. Box MG-11, 077125 Magurele, Romania


E-mail
maxandronic.phys@gmail.com


Keywords:
3D simulation, gravitational interactions, orbital dynamics, closest stars, Gaia data, astrophysics.


Abstract:
In this presentation, I will discuss my progress in simulating the gravitational interactions of multiple bodies in three dimensions using Python. Additionally, I will describe my ongoing work in modelling the orbit of the Sun and neighbouring stars within the Milky Way potential by incorporating Gaia data. I will begin by providing an overview of the principles underlying gravitational simulations and their significance in astrophysics research. I will explain the computational techniques I have employed to numerically solve the equations of motion governing celestial bodies' interactions. Next, I will present my Python code that performs the simulation of N bodies in three-dimensional space. I will explain the implementation details, including the calculation of gravitational forces between bodies and the integration of equations of motion using scipy.solve_ivp. I will showcase the ability of my code to accurately simulate the behaviour of multiple bodies under the influence of gravity alone. Furthermore, I will discuss my ongoing efforts to incorporate Gaia data into my simulations. By extracting relevant positional and velocity information from Gaia's database, I aim to model the orbit of the Sun and neighbouring stars within the Milky Way potential. I will outline the challenges I have encountered in incorporating a realistic potential model and real data.


Acknowledgement:
This work was conducted under the guidance of Dr. Laurențiu Caramete, SC III, at the Institute of Space Science.