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Here you will find some sections of interest

Sebastian Bruzzone
Research and Theaching Assitant at The University of Western Ontario.
jbruzzon(at)uwo.ca
Physics and Astronomy Building Room 134
Meteor Lab phone: +5196612111 ext 87985

Simulations and Programs

Some programs developed during my bachelor degree will be found here. At the time, just two of them will be posted, hopefully more will be coming soon. Lets start with a simple integrator that solves the restricted three body problem using the Runge Kuta method using the Numerical Recipes subroutines in Fortran. Coming soon a N-body integrator, unfortunately, it would lack the close encounter subroutine, it is in a developing stage still though.

  • LFN10 and LFN10-OMP. Numerical Integrators for the N Body Problem
    In this report, we present the results from 3 codes developed in fortran for the simulation of the Solar System as a N=10 body system with Sun+Planets and Pluto.The codes named LFN10, LFN10-OMP and E, use the Leapfrog algorithm. The codes return (x,y,z) for each body in time, with the energy of the system and its error, the angular momentum and also the orbital elements (a,e,i). LFN10 is the serial version of the code with a warming up of velocities using EULER method, whereas E uses the velocities at half step from NASA's JPL Horizon web site. LFN10-OMP implements the Open MP directives. LFN10-OMP suffers of the overhead symptom, giving a lower performance than the LFN10. This work was presented as the final project for the Computational Physics Course. (IN SPANISH)
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  • Restricted 3 Body Problem Integrator
    In this brief report with go through the implementation of a simple 3 body solver using Numerical Recipes' Runge-Kuta subroutine. You will find some orbits integrated in the Sun-Jupiter System and the appearance of Trojan-like orbits. Also, the Poincare sections are performed showing stability regions for this configuration. As an indicator of numerical stability, the Jacobi Constants is checked in every step.(SPANISH)
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  • Evolution of Inner Earth Objects
    In this oral presentation at the Uruguayan Astronomical Society, we inform about the findings of three numerical simulations of Inner Earth Objects. The last run, of about 10Myrs, shows at least 2 regions very well defined in values of semi major axis, where particles suited there with near zero initial eccentricities and inclinations, will evolve in regular and stable orbits. This gives a hint about the dynamical behavior of these objects suggesting that primordial objects, could survive the age of the Solar System in this regions. Yarkowski effect was not part of the code, and must not be avoided. Also, relativistic corrections where omitted. This findings, are in agreement with the results of other authors, with just 2 months of difference. (SPANISH)
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 This site is currently under construction, it will be complete very soon,  I apologize for any inconvenient.

''Perhaps the most widespread evil is the Western view of man and nature.
Among us, it is widely believed that man is apart from nature, superior to it;
indeed, evolution is a process to create man and seat him on the apex of the
cosmic pinnacle. He views the earth as a treasury that he can plunder at will.
And, indeed, the behavior of Western people, notably since the advent of the
Industrial Revolution, gives incontrovertible evidence to support this assertion.''
Ian McHarg, 1971

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