ParkerSpiral

class heliopy.models.ParkerSpiral(**func_kwargs)

Bases: object

A Parker spiral mangetic field line.

Parameters

• v (Quantity) – Solar wind speed.

• r0 (Quantity) – Radial distance from the solar center of a reference point on the spiral.

• l0 (Quantity) – Longitude of the reference point on the spiral.

• omega_sun (Quantity) – Angular rotation rate of the Sun. Defaults to 14.713 deg/day.

Notes

The longitude of the spiral as a funciton of r is given by

\[\phi = \phi_{0} - \Omega_{\odot} \left ( r - r_{0} \right ) / v_{sw}\]

where \(\phi_{0}\) and \(r_{0}\) are a reference longitude and radial distance that the spiral passes through, \(\Omega_{\odot}\) is the solar rotation rate, \(v_{sw}\) is the solar wind speed, and \(r\) is the radial distance from the solar center.

Methods Summary

longitude(**func_kwargs)

Sample the spiral longitude at given radial distances.

Methods Documentation

longitude(**func_kwargs)

Sample the spiral longitude at given radial distances.

Parameters

rs (Quantity) – Radial distance(s).