pidgey 0.2.2

Python interface for the dynamics of galaxies. Uses agama, gala, and galpy as backends.

pidgey

A python interface for dynamics of galaxies, using existing galactic dynamics libraries in Python (galpy, gala and agama) as backends.

This is currently used in the commensurability library.

Installation

Install this package via pip:

python -m pip install pidgey

Usage

Get the points from an orbit integration stored in an astropy.coordinates.SkyCoord object by calling the compute_orbit method of a backend. The backend can generally be obtained from the potential used for the orbit integration with the get_backend_from function.

import astropy.coordinates as c
import astropy.units as u

from pidgey import get_backend_from

def calculate_orbit(ic: c.SkyCoord,
                    potential: Any
                    ) -> c.SkyCoord:
    backend = get_backend_from(potential)
    orbit = backend.compute_orbit(ic, potential, dt=0.01 * u.Gyr, steps=1000)
    return orbit