The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 18 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. We thank you in advance for your valuable feedback.
Fermi Gamma-ray Space Telescope

Fermi Catalogs Facilitate Science

Astronomical catalogs provide a starting point for research, as shown in the box to the right. Because the Fermi instruments survey the sky continuously, they are ideally suited to producing both general and specialized catalogs.

The Fermi Science Support Center makes these catalogs available. See: http://fermi.gsfc.nasa.gov/ssc/data/access/

Ways in Which Catalogs Enable Scientific Research

The Third Fermi LAT Source Catalog (3FGL)

The 3FGL catalog contains 3033 gamma-ray sources seen by the LAT at energies above 100 MeV.
The 3FGL catalog, shown above in Galactic coordinates, contains 3033 gamma-ray sources seen by Fermi's Large Area Telescope at energies above 100 MeV. The table below shows the demographics of the high-energy gamma-ray sky. The LAT catalog defines firmly identified sources as those recognized by spatial morphology, periodicity, or correlated variability with other wavelengths. The associated sources are statistically related to known objects based primarily on sky location. + Learn More
* Includes binaries, nova, globular clusters, and star-forming regions
Type # Identified # Associated
Pulsars 143 24
Pulsar Wind Nebulae (PWNe) 9 2
Supernova Remnants (SNRs) 12 11
Candidate SNR/PWNe -- 49
Quasars (steep and soft spectrum) 0 4
BL Lac Blazars 18 642
Flat Spectrum Radio Quasars 38 446
Other Active Galactic Nuclei 10 587
Normal & Starburst Galaxies 2 5
Other* 6 15
Totals 238 1785
Unassociated -- 1010

The Second Fermi GBM Gamma-ray Burst Catalog

The Second GBM gamma-ray burst catalog contains 953 gamma-ray bursts.
The Second GBM gamma-ray burst catalog, shown above in Celestial coordinates, contains 953 gamma-ray bursts. Long bursts have duration greater than 2 second; short bursts have duration less than 2 seconds.

There is also a table of GRBs that have high-energy components detected by the LAT. This table is kept up-to-date by the LAT instrument team.

Wide Variety of Specialized Catalogs

In addition to all-sky catalogs, the instrument teams have performed more specialized analyses, focusing on specific source classes and using careful, systematic treatment of all the class members. As a result there are several publicly-available catalogs that are useful for studies of both individual sources as well as entires source populations.