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: Pile-Up Model Components Up: Convolution Model Components Previous: zashift: redshift an additive   Contents


zmshift: redshift a multiplicative model

This convolution model redshifts a multiplicative model. It takes the calculated model and shifts energies by 1/(1+z).

The energies command must be to used to extend the maximum energy over which the model is being calculated to (1+z) times the maximum energy in the response.

The parameter is:

par1 redshift

An example model use is: 

XSPEC>model phabs*(zmshift*phabs)*pow
which multiplies the power-law by both a redshifted and local absorption.