LAT 2-year Catalog: Fermi Gamma-ray Space Telescope Point Sources

Fermi's Large Area Telescope provides a successor to EGRET with improved sensitivity, resolution, and energy range. This catalog presents the second full listing of LAT sources, derived from the first 24 months of survey data. The National Aeronautics and Space Administration (NASA) produced this catalog, with a detailed explanation available in the referenced LAT 2-year Catalog Paper.

Use Cases

• Identify and catalog gamma-ray point sources based on the first 24 months of LAT survey data.
• Analyze source characteristics and distributions based on the catalog's improved sensitivity and resolution.
• Compare source evolution and detection against the predecessor EGRET instrument.
• Conduct statistical studies of high-energy astrophysical populations based on the catalog's source listings.

Strengths

• Based on data from the Fermi Large Area Telescope, which offers improved sensitivity, resolution, and energy range over its predecessor.
• Represents the second full catalog, indicating a progression and refinement from earlier releases.
• Covers the first 24 months of the telescope's survey data, providing a defined temporal baseline.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale statistical modeling.
• Available file formats are listed as BMP and GIF, which are atypical for a scientific catalog and may indicate a presentation layer rather than the underlying data.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Data gathered by the Fermi Gamma-ray Space Telescope's Large Area Telescope instrument.

Time Range

First 24 months of the telescope's survey mission.

Freshness

Last updated 2026-04-10 19:40:49.496019; freshness should be verified.

Geography

Space-based observations; celestial coverage.