FieldLine¶

class pfsspy.FieldLine(x, y, z, output)¶

Bases: astropy.coordinates.sky_coordinate.SkyCoord

A single magnetic field line.

Parameters:	x : y : z : output : `Output`

Attributes Summary

`expansion_factor`	Magnetic field expansion factor.
`is_open`	Returns `True` if one of the field line is connected to the solar surface and one to the outer boundary, `False` otherwise.
`polarity`	Magnetic field line polarity.

Attributes Documentation

expansion_factor¶

Magnetic field expansion factor.

The expansion factor is defnied as \((r_{\odot}^{2} B_{\odot}) / (r_{ss}^{2} B_{ss}))\)

Returns:	exp_fact : float Field line expansion factor. If field line is closed, returns `None`.

is_open¶: Returns True if one of the field line is connected to the solar surface and one to the outer boundary, False otherwise.

polarity¶

Magnetic field line polarity.

Returns:	pol : int 0 if the field line is closed, otherwise sign(Br) of the magnetic field on the solar surface.