Skip to main content

Due to the lapse in federal government funding, NASA is not updating this website. We sincerely regret this inconvenience.

Xspec Home Page

next up previous contents
Next: olivineabs: Absorption due to Up: Multiplicative Model Components Previous: mtable: multiplicative tabular model   Contents


notch: absorption line, notch

A notch line absorption. This is model is equivalent to a very saturated absorption line.

$\displaystyle M(E) = \begin{array}{ll} (1-f) & E_L - W/2 < E < E_L + W/2 \\ [.2cm]1 & \mbox{elsewhere} \end{array}$
where

par1=$E_L$ line energy (keV)
par2=W line width (keV)
par3=f covering fraction