pyrtlib.utils.tk2b_mod#

pyrtlib.utils.tk2b_mod(hvk: ndarray, t: ndarray) ndarray#

Get modified Planck function (Planck function without the constants \(\frac{2h\nu^3}{c^2}\)) by T and hvk (Planck constant * frequency) / Boltzmann constant, (equation (4) from [Schroeder-Westwater-1991])

\[\tilde{B} = \frac{1}{ e^{\frac{h\nu}{k_{B}T}}-1}\]
Parameters:
Returns:

Modified Planck function.

Return type:

numpy.ndarray