[docs]class DiluteBlackBodyRadiationFieldState:
"""
Represents the state of a dilute thermal radiation field.
Parameters
----------
t_radiative : u.Quantity
Radiative temperature in each shell
dilution_factor : numpy.ndarray
Dilution Factors in each shell
geometry: tardis.model.Radial1DModel
The geometry of the model that uses to constrains the active shells
"""
def __init__(
self,
t_radiative: u.Quantity,
dilution_factor: np.ndarray,
geometry=None,
):
# ensuring that the radiation_field has both
# dilution_factor and t_radiative equal length
assert len(t_radiative) == len(dilution_factor)
if (
geometry is not None
): # check the active shells only (this is used when setting up the radiation_field_state)
assert np.all(
t_radiative[
geometry.v_inner_boundary_index : geometry.v_outer_boundary_index
]
> 0 * u.K
)
assert np.all(
dilution_factor[
geometry.v_inner_boundary_index : geometry.v_outer_boundary_index
]
> 0
)
else:
assert np.all(t_radiative > 0 * u.K)
assert np.all(dilution_factor > 0)
self.t_radiative = t_radiative
self.dilution_factor = dilution_factor
[docs] def calculate_mean_intensity(self, nu: Union[u.Quantity, np.ndarray]):
"""
Calculate the intensity of the radiation field at a given frequency.
Parameters
----------
nu : u.Quantity
Frequency at which the intensity is to be calculated
Returns
-------
intensity : u.Quantity
Intensity of the radiation field at the given frequency
"""
return self.dilution_factor * intensity_black_body(
nu[np.newaxis].T, self.t_radiative
)