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.
zigm: UV/Optical attenuation by the intergalactic medium
This multiplicative model computes the mean attenuation of the optical/UV
spectrum of an object at redshift z at a random position on the sky due to
intergalactic medium (IGM) clouds following either
Madau (1995)
or Meiksin (2006).
The model calculates the mean expected attenuation due to resonant scattering
by Lyman transitions and photoelectric absorption shortward of the Lyman limit.
Attenuation by Helium and metals are not included in the Meiksin model, but
are expected to be small. The total attenuation is set to zero for wavelengths
less than 900 Angstroms. The user chooses whether to include attenuation due
to photoelectric absorption.
| par1 |
z: redshift |
| par2 |
model: use Madau(0) or Meiksin(1) |
| par3 |
include photoelectric absorption(1) or not(0) |
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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.
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