etable: exponential tabular model

An exponential table model. The filename to be used should be given immediately after etable in the model command. For example:

XSPEC12> model etable{mymod.mod}

uses mymod.mod as the input for the model. XSPEC will multiply the contents of the model by -1 then take the exponential i.e. this model is for calculating absorption functions. For specifications of the table model file, see the OGIP memo 92-009 on the FITS file format for table model files (available from https://heasarc.gsfc.nasa.gov/docs/heasarc/ofwg/docs/summary/ogip_92_009_summary.html).

The model value is assumed unity outside the tabulated energies unless the keywords LOELIMIT and HIELIMIT are given in the primary extension of the FITS file. In the latter case the value given in LOELIMIT will be used for energies below those tabulated and HIELIMIT for energies above those tabulated.



HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public

Last modified: Friday, 23-Aug-2024 13:20:40 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.