TwoHotRegions
Instances of TwoHotRegions
are represent pair of
radiatively intense regions of the source photosphere. The class inherits
from HotRegion
, and applies the methods to compute photon
pulses from a pair of spots where one is derived from the other.
Specifically, the regions are related via antipodal reflection symmetry.
Useful for pulsars under the assumption of a dominantly dipolar magnetic
field with two magnetic polar caps.
The same configuration can be achieved manually via application of the
HotRegions
class, with very slightly higher likelihood
expense (the difference is not significant enough to concern oneself with).
- class xpsi.TwoHotRegions.TwoHotRegions(*args, **kwargs)[source]
Bases:
HotRegion
Two photospheric hot regions, related via antipodal reflection symmetry.
The primary hot region is represented by the class from which the
TwoHotRegions.TwoHotRegions
derives – i.e., theHotRegion.HotRegion
class.This class differs from the
HotRegions.HotRegions
class because it works specifically for two hot regions, via inheritance, where one is derived from the other purely via antipodal reflection symmetry. The secondary hot region is handled by adding behaviour to the parent class.This means that all parameters describing the secondary are derived from the primary: the secondary is antipodal and given by an equatorial reflection of the primary, followed by a rotation by \(\pi\) radians about the rotation axis. The mirroring is thus with respect to a 2-plane through the coordinate origin which is perpendicular to the line through the origin and the primary centre.
- Parameters:
kwargs (dict) – Keyword arguments passed to
HotRegion.HotRegion
class.
- property cellArea
Get the areas of cells in the secondary mesh.
- integrate(st, energies, threads, hot_atmosphere, elsewhere_atmosphere)[source]
Integrate over the photospheric radiation field.
Calls the CellMesh integrator, with or without exploitation of azimuthal invariance of the radiation field of the hot region.
- Parameters:
st – Instance of
Spacetime
.energies – A one-dimensional
numpy.ndarray
of energies in keV.threads (int) – Number of
OpenMP
threads for pulse integration.
- print_settings()
Print numerical settings.