Lesson 4 - Multi-body Problem: A better solution

Notes

• Part1_programming_hermite_notes_lesson02.pdf
• Part2_hermite_in2d_nbody.pdf
• Part3_programming_readWriteData_keplersData_lesson03.pdf

Downloads

Python Libraries

Note: put these in the same directory as your .pynb notebooks.

• hermite_library.py
• convert_kepler_data.py
• convert_galaxy_data.py

Data

• Kepler 11 System Data
• Kepler 101 System Data

Galaxy snapshot files - different resolutions

• low res - galaxySnaps/snap_001_fac1n3.txt
• mid res - galaxySnaps/snap_001_fac1n2.txt
• high res - galaxySnaps/snap_001_fac1n1.txt

Articles

• Integrators Article - this article describes the fundamental problems to solving the motions of multiple gravitating systems and discusses several solvers (including ones we’ve looked at in this class). (Calculus is involved.)

Links

• Super Planet Crash
• Bonus: Orbits Game

• More on N-body Units

• Online 3D solar system interactive animation - https://theskylive.com/3dsolarsystem
• More plotting of 3D examples with matplotlib

Other exoplanets

• Exoplanet Archive - see “Data –> Confirmed Planets” option (hover over “Data”)
• Exoplanet orbit database (deprecated, but with plots)
• astroquery API

Materials

• Lecture 4, Part 1 - Higher order solvers: (view, source, present)
• Lecture 4, Part 2 - Onto N-body!: (view, source, present)
• Notebook Part1_programming_hermite_notes_lesson04: (view, download)
• Notebook Part2_hermite_in2d_nbody: (view, download)
• Notebook Part3_programming_readWriteData_keplersData_lesson04: (view, download)
• Notebook inClass_lesson04: (view, download)