FortranTracer

class pfsspy.tracing.FortranTracer(max_steps=1000, step_size=0.01)

Bases: pfsspy.tracing.Tracer

Tracer using Fortran code.

Parameters

• max_steps (int) – Maximum number of steps each streamline can take before stopping.

• step_size (float) – Step size as a fraction of cell size at the equator.

Notes

Because the stream tracing is done in spherical coordinates, there is a singularity at the poles (ie. \(s = \pm 1\)), which means seeds placed directly on the poles will not go anywhere.

Methods Summary

trace(seeds, output)	param seeds Coordinaes of the magnetic field seed points.
vector_grid(output)	Create a streamtracer.VectorGrid object from an Output.

Methods Documentation

trace(seeds, output)

Parameters

• seeds (astropy.coordinates.SkyCoord) – Coordinaes of the magnetic field seed points.

• output (pfsspy.Output) – pfss output.

Returns

streamlines – Traced field lines.

Return type

FieldLines

static vector_grid(output)

Create a streamtracer.VectorGrid object from an Output.