src.Atomic.LTELib.Planck_cm

src.Atomic.LTELib.Planck_cm(*args, **kwargs)

given wavelength and temperature, calculate the wavelength based planck function.

with nb.vectorize( [nb.float64(nb.float64,nb.float64)]).

Parameters

• W (np.double or array-like) – wavelength, [\(cm\)]

• T (np.double or array-like) – temperature, [\(K\)]

Returns

intensity – wavelength based intensity, [\(erg/cm^2/Sr/cm/s\)]

Return type

np.double or array-like

Notes

The Planck function 1.

\[B_{\lambda}(T) = \frac{2hc^2}{\lambda^5} \frac{1}{e^{hc/\lambda kT}-1} \quad [erg/cm^2/Sr/cm/s]\]

References

1

Robert J. Rutten, “Introduction to Astrophysical Radiative Transfer”, pp. 43, 2015.