FERMILBSL ivo://nasa.heasarc/fermilbsl NASA/GSFC HEASARC Fermi LAT Team 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The Fermi LAT table of bright sources is a list of bright LAT sources that have statistical significances of 10 sigma or higher, based on the first three months of survey data. The primary purpose of this list is to assist proposers for Guest Investigator Cycle 2 (due date 6 March). This list will eventually be superseded by the LAT Source Catalog, to be released about one year after launch. This database table was created by the HEASARC in February 2009 based on the electronic data obtained from the Fermi Science Support Center (FSSC) available at <a href="http://fermi.gsfc.nasa.gov/ssc/data/access/lat/bright_src_list/">http://fermi.gsfc.nasa.gov/ssc/data/access/lat/bright_src_list/</a>. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/fermilbsl.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=fermilbsl& GET text/xml 180 99999 true 165.057 -80.012 0.5 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=fermilbsl GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_fermilbsl&Action=More+Options&Action=Parameter+Search&ConeAdd=1 FERMI 0.5 Gamma-ray public fermilbsl Fermi LAT Bright Source List name LAT Bright Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable error_radius Radius of 95% Confidence Region (degrees) degree stat.error;pos double nullable sqrt_ts Square Root of Likelihood Test Statistic (TS) from 200MeV-100GeV Analysis stat.likelihood double nullable flux_0p1_1_gev_limit Limit Flag for 100MeV - 1GeV Photon Flux meta.code;phot.flux;em.gamma char nullable flux_0p1_1_gev 100MeV - 1GeV Photon Flux photon/s/cm^2 phot.flux;em.gamma double nullable flux_0p1_1_gev_error Uncertainty in 100MeV - 1GeV Photon Flux photon/s/cm^2 stat.error;phot.flux;em.gamma double nullable flux_1_100_gev 1 - 100GeV Photon Flux photon/s/cm^2 phot.flux;em.gamma double nullable flux_1_100_gev_error Uncertainty in the 1 - 100GeV Photon Flux photon/s/cm^2 stat.error;phot.flux;em.gamma double nullable var_flag Flag [T] Indicates 1% Chance of Being a Steady Source meta.code;src.var char nullable alt_gammaray_name_1 Identification or Positional Associations with 3EG, EGR, and 1AGL Counterparts meta.id.assoc char nullable alt_name_1 Identification or Positional Associations with Potential Counterparts meta.id.assoc char nullable alt_name_2 Identification or positional associations with Potential Counterparts meta.id.assoc char nullable alt_source_type Alternative Classification of Source src.class char nullable sqrt_ts_0p1_1_gev Square Root of Test Statistic for the 100 MeV - 1 GeV Range stat.likelihood;phot.flux double nullable lii Galactic Longitude degree pos.galactic.lon double nullable bii Galactic Latitude degree pos.galactic.lat double nullable sqrt_ts_1_100_gev Square Root of Test Statistic for the 1 - 100 GeV Range stat.likelihood;phot.flux double nullable alt_gammaray_name_2 Identification or positional associations with 3EG, EGR, and 1AGL Counterparts meta.id.assoc char nullable alt_gammaray_name_3 Identification or positional associations with 3EG, EGR, and 1AGL Counterparts meta.id.assoc char nullable source_type Classification of Source src.class char nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable