powerlaw, zpowerlw: power law photon spectrum
powerlaw is a simple photon power law. The zpowerlw variant computes a redshifted spectrum.
par1 = a |
photon index of power law (dimensionless) |
norm= K |
photons keV–1cm–2s–1 at 1 keV |
For zpowerlw the formula and corresponding parameters are:
where :
par1= a |
photon index of power law (dimensionless) |
par2= z |
Redshift |
norm= K |
photons keV–1cm–2s–1 at 1 keV |