HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.

Search:

[Advanced Search]



next up previous contents Xspec Home Page
Next: acisabs: Chandra ACIS q.e. Up: Multiplicative Model Components Previous: Multiplicative Model Components


absori: ionized absorber

An ionized absorber based on that of Done et al. (1992, ApJ 395, 275) and developed by Magdziarz & Zdziarski (1995, MNRAS 273, 837). See also Zdziarski et al. (1995, ApJ 438, L63). Photoionization rates are from Reilman & Manson (1979, ApJS 40, 815), who employ the Hartree-Slater approximation (accurate to about 5%), and recombination rates are from Shull & van Steenberg (1982, ApJS 48, 95). The cross sections are extrapolated with $E^{-3}$ above 5 keV. The abundances are set up by the command abund. Send questions or comments to aaz@camk.edu.pl

par1 power-law photon index.
par2 Hydrogen column in units of $10^{22}cm^{-2}$
par3 Absorber temperature in K.
par4 Absorber ionization state (L/nR2), see Done et al. (1992)
par5=z redshift.
par6 Iron abundance relative to that defined by the command abund

HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public
Last modified: Friday, 23-Aug-2024 14:07:30 EDT

HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.