kerr-newman module¶

This module contains the class, defining Kerr-Newman Spacetime:

class einsteinpy.metric.kerrnewman.KerrNewman(**func_kwargs)[source]¶

Class for defining Kerr-Newman Goemetry

Constructor

Parameters

coords (*) – Coordinate system, in which Metric is to be represented
M (Quantity) – Mass of gravitating body, e.g. Black Hole
a (Quantity) – Spin Parameter
Q (Quantity) – Charge on gravitating body, e.g. Black Hole
q (Quantity, optional) – Charge, per unit mass, of the test particle Defaults to 0 C / kg

metric_covariant(x_vec)[source]¶

Returns Covariant Kerr-Newman Metric Tensor in chosen Coordinates

Parameters: x_vec (array_like) – Position 4-Vector
Returns: Covariant Kerr-Newman Metric Tensor in chosen Coordinates Numpy array of shape (4,4)
Return type: ndarray
Raises: NotImplementedError – In case of the metric is not available in the supplied Coordinate System

em_potential_covariant(x_vec)[source]¶

Returns Covariant Electromagnetic 4-Potential Specific to Kerr-Newman Geometries

em_potential_contravariant(x_vec)[source]¶

Returns Contravariant Electromagnetic 4-Potential Specific to Kerr-Newman Geometries

Parameters: x_vec (array_like) – Position 4-Vector
Returns: Contravariant Electromagnetic 4-Potential Numpy array of shape (4,)
Return type: ndarray

em_tensor_covariant(x_vec)[source]¶

Returns Covariant Electromagnetic Tensor Specific to Kerr-Newman Geometries

em_tensor_contravariant(x_vec)[source]¶

Returns Contravariant Electromagnetic Tensor Specific to Kerr-Newman Geometries

EinsteinPy