LAT Background Models

Description

The Galactic model is a spatial and spectral template. The model for the Galactic diffuse emission was developed using spectral line surveys of HI and CO (as a tracer of H2) to derive the distribution of interstellar gas in Galactocentric rings. Infrared tracers of dust column density were used to correct column densities in directions where the optical depth of HI was either over or under-estimated. The model of the diffuse gamma-ray emission was then constructed by fitting the gamma-ray emissivities of the rings in several energy bands to the LAT observations.

Resources

Name Format Description Link
21 BackgroundModels.html http://fermi.gsfc.nasa.gov/ssc/data/access/lat/BackgroundModels.html
21 URL for retrieval of ancillary information through https https://cddis.nasa.gov/archive/
21 URL for more information about the CDDIS https://cddis.nasa.gov/
21 BackgroundModels.html http://fermi.gsfc.nasa.gov/ssc/data/access/lat/BackgroundModels.html

Tags

  • high-energy
  • balloon
  • fermi
  • bursts
  • glast
  • compton
  • gamma-ray
  • glast-ssc
  • gamma
  • gssc
  • egret
  • cgro
  • gro
  • energy
  • acd

Topics

Categories