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.

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smedge: smeared edge

A smeared edge (Ebisawa PhD thesis, implemented by Frank Marshall).

$\displaystyle M(E) = \begin{array}{ll} 1 & E < E_c\\ [.2cm]\exp\left[-f(E/E_c)^\alpha\right] \left[1-\exp((E_c-E)/W)\right] & E \geq E_c \end{array}$

where:

par1=$E_c$ the threshold energy (keV)
par2=f the maximum absorption factor at threshold
par3=$\alpha$ index for photo-electric cross-section (normally -2.67)
par4=W smearing width (keV)

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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.