Python at the speed of light Simulating relativity using EinsteinPy Lightning Talk Shreyas Bapat @astroshreyas PyAstro 2019 @ STScI, Baltimore (USA) 29/07/2019 

Who is this guy? ● Undergraduate (Electrical Engineering) from IIT Mandi, India ● Amateur Astronomer ● Software Intern @ Siemens ● Passionate about open code ● Former Coordinator of Space Technology and Astronomy Cell, IIT Mandi 

What’s Wrong? According to derivation from Maxwell’s equation, speed of light is given by : ● The equation does not depend upon the position or velocity of the observer. ● This contradicts with Galileo’s and Newton’s perception of velocity(classical mechanics) 

Incorporate Gravity into SR (GR) ● Special Relativity - 1905 ● General Relativity - 1916 ● First exact solution to GR(Schwarzschild Solution) - 1916 

Straight lines in curved space! ● Introduction to geodesics ● In differential geometry, a geodesic is a curve representing in some sense the shortest path between two points in a surface, or more generally in a Riemannian manifold. It is a generalization of the notion of a "straight line" to a more general setting. 

Einstein’s Field Equation (EFE) Einstein's equation relates the matter content (right side of the equation) to the geometry (the left side) of the system. It can be summed up with "mass creates geometry, and geometry acts like mass". 

Schwarzschild Solution ● Kerr Solution ● Kerr-Newman Solution ● No-hair theorem 

What is 

Astropy Affiliated Package (Recently) 

Astropy Affiliated Package The only project which targets GR 

The EinsteinPy Core Team Shreyas Bapat Lead Developer Coordinates, Plotting and Packaging Ritwik Saha Lead Developer Symbolic Bhavya Bhatt Theoretical Physicist Metrics and ODE Priyanshu Khandelwal Lead Developer Conda Packaging, Adaptive Mesh Refinement 

Complete Workflow on GitHub 

OSI Approved Licence 

General Details ~ 28 Contributors so far! ~ 3200 Downloads (PyPi + conda) ~ 112 Stars (We want more :p) Packaged in Debian Astro Pure Blend 

Testing and Continuous Integration 

The EinsteinPy Package Key functionality and common tools needed for doing general relativity, gravitational physics, relativistically corrected orbit dynamics with Python 

The EinsteinPy Package Key functionality and common tools needed for doing general relativity, gravitational physics, relativistically corrected orbit dynamics with Python Key Features : Geometry analysis and trajectory calculation in vacuum solutions of Einstein’s field equations. - Schwarzschild Space-Time - Kerr Space-Time - Kerr-Newman Space-Time 

The EinsteinPy Package Key functionality and common tools needed for doing general relativity, gravitational physics, relativistically corrected orbit dynamics with Python Key Features : Coordinates support (~einsteinpy.coordinates) - Cartesian Coordinates - Spherical Coordinates - Boyer Lindquist Coordinates 

The EinsteinPy Package Key functionality and common tools needed for doing general relativity, gravitational physics, relativistically corrected orbit dynamics with Python Key Features : Symbolic Calculations - Christoffel Symbols - Riemann Curvature Tensor - Simplification of symbolic expressions - Weyl Tensor, Einstein Tensor SOCIS Student: Sofía Ortín Vela, Universidad de Zaragoza (Spain) 

The EinsteinPy Package Key functionality and common tools needed for doing general relativity, gravitational physics, relativistically corrected orbit dynamics with Python Key Features : Visualisation of Geodesics - 2D, 3D Visualisation using Matplotlib - 2D, 3D Interactive Visualisation using Plotly - Environment aware plotting and backend selection 

Let’s shoot a particle towards a Kerr Black hole 

Interesting : The Logo! They are geodesics (Plotted using matplotlib and EinsteinPy :P) 

Get in touch with EPy Community! Mailing List : [email protected] (https://groups.io/g/einsteinpy-dev) Chatroom : https://matrix.to/#/#einsteinpy:matrix.org Developer Support : [email protected] GitHub : https://github.com/einsteinpy/einsteinpy Blog : https://einsteinpy.org Documentation: https://docs.einsteinpy.org 

Get in touch :D GitHub : shreyasbapat Twitter : @astroshreyas You can follow me to keep updated :) Or mail me : [email protected] , [email protected]