spectral_radUniformCosmicBackground

Workspace.spectral_radUniformCosmicBackground(self, spectral_rad: StokvecVector = self.spectral_rad, freq_grid: AscendingGrid = self.freq_grid) → None

Background spectral radiance is from a uniform cosmic background temperature.

\[\begin{split}\vec{I} = \left[ \begin{array}{c} \frac{2h\vec{\nu}^3}{c^2} \frac{1}{e^{\frac{h\vec{\nu}}{kT_c}} - 1} \\ 0 \\ 0 \\ 0 \end{array}\right],\end{split}\]

where \(T_c\) is the cosmic microwave background temperature. \(\nu\) is the frequency grid.

Author: Richard Larsson

Parameters:

• spectral_rad (~pyarts3.arts.StokvecVector, optional) – A spectral radiance vector. Defaults to self.spectral_rad. [OUT]

• freq_grid (~pyarts3.arts.AscendingGrid, optional) – A frequency grid. Unit: Hz. Defaults to self.freq_grid. [IN]