LAT Background Models

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.

Data and Resources

Additional Info

Field Value
Maintainer Phil Newman
Last Updated April 23, 2025, 22:36 (UTC)
Created March 31, 2025, 13:13 (UTC)
accessLevel public
accrualPeriodicity irregular
bureauCode {026:00}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id https://data.nasa.gov/data.json
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
harvest_object_id e076a801-3092-40e9-a4ce-61efdfb66536
harvest_source_id 61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title DNG Legacy Data
identifier NASA-0000227
issued 2018-06-25
landingPage https://data.nasa.gov/dataset/lat-background-models
modified 2020-01-29
programCode {026:014}
publisher National Aeronautics and Space Administration
resource-type Dataset
source_datajson_identifier true
source_hash 303ff19de58f973a3b11c7e057d20ec7b07dbd23d9554bdee6fbc77d2d399a3f
source_schema_version 1.1
theme {"Space Science"}