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: hrefl: reflection model Up: Multiplicative Model Components Previous: heilin: Voigt absorption profiles


highecut, zhighect: high-energy cutoff

A high energy cutoff.

$\displaystyle M(E) = \begin{array}{ll} exp\left[(E_c-E)/E_f\right] & E \geq E_c\\ [.2cm]1.0 & E \leq E_c \end{array}$
where

par1=$E_c$ cutoff energy in keV
par2=$E_f$ e-folding energy in keV

The redshifted version zhighect has

$\displaystyle M(E) = \begin{array}{ll} exp\left[(E_c-E[1+z])/E_f\right] & E \geq E_c\\ [.2cm]1.0 & E \leq E_c \end{array}$
where

par1=$E_c$ cutoff energy in keV
par2=$E_f$ e-folding energy in keV
par3=z redshift

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.