wndabs, zwndabs: photo-electric absorption, warm absorber

Photo-electric absorption from approximation to a warm absorber using Balucinska,-Church, and McCammon (ApJ 400, 699) cross-sections. Relative abundances are set by the abund command.

	1                                  E > EW

 

where s(E) is the photo-electric cross-section (NOT including Thomson

scattering) and

par1= nH	equivalent hydrogen column (in units of 1022 atoms cm–2)
par2= EW	window energy (keV)

The zwndabs variant allows the user to specify a (fixed) redshift and uses the corresponding formula:

	1                                              E > EW

with parameters:

par1= nH	equivalent hydrogen column (in units of 1022 atoms cm–2)
par2= EW	window energy (keV)
par3= z	redshift