Description Usage Format Details Fields Source

Fermi Large Area Telescope First Source Catalog (1FGL). Abdo, A. A. et al., The Astrophysical Journal Supplement Series, 188, 405 (2010).

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A data frame with 89 variables on 1451 gamma-ray sources.

Initial Release: 14 Jan 2010 Latest Release: gll_psc_v03.fit (9 February 2010)

- Source_Name
1FGL JHHMM.m+DDMM[c], constructed according to IAU Specifications for Nomenclature; m is decimal minutes of R.A.; in the name R.A. and decl. are truncated at 0.1 decimal minutes and 1' , respectively; 'c' indicates that based on the region of the sky the source is considered to be potentially confused with Galactic diffuse emission

- RA
Right Ascension, J2000, deg, three decimal places

- DEC
Declination, J2000, deg, three decimal places

- GLON
Galactic longitude, deg, three decimal places

- GLAT
Galactic latitude, deg, three decimal places

- Conf_68_SemiMajor
Semimajor radius of 68% confidence region, deg, three decimal places

- Conf_68_SemiMinor
Semiminor radius of 68% confidence region, deg, three decimal places

- Conf_68_PosAng
Position angle of 68% confidence region, deg. east of north, 0 decimal places

- Conf_95_SemiMajor
Semimajor radius of 95% confidence region, deg, three decimal places

- Conf_95_SemiMinor
Semiminor radius of 95% confidence region, deg, three decimal places

- Conf_95_PosAng
Position angle of 95% confidence region, deg. east of north, 0 decimal places

- Signif_Avg
Significance derived from likelihood TS for 100 MeV\342\200\223100 GeV analysis, one decimal place

- Pivot_Energy
Energy at which error on differential flux is minimal, in MeV

- Flux_density
Differential flux at Pivot_Energy, in cm^-2 MeV^-1 s^-1

- Unc_Flux_Density
1 sigma error on differential flux at Pivot_Energy, in cm^-2 MeV^-1 s^-1

- Spectral_Index
Best-fit power-law slope

- Unc_Spectral_Index
1 sigma error on best-fit power-law slope

- Flux1000
Integral flux from 1 to 100 GeV, in cm^-2 s^-1

- Unc_Flux1000
1 sigma error on integral flux from 1 to 100 GeV, in cm^-2 s^-1

- Energy_Flux
Energy flux from 100 MeV to 100 GeV, in erg cm^-2 s^-1

- Unc_Energy_Flux
1 sigma error on energy flux from 100 MeV to 100 GeV, in erg cm^-2 s^-1

- Curvature_Index
Measure of how spectrum follows power law (currently simple chi-squared)

- Flux30_100
Integral flux from 30 to 100 MeV (not filled)

- Unc_Flux30_100
1 sigma error on integral flux from 30 to 100 MeV (not filled)

- Sqrt_TS30_100
Square root of the TS between 30 and 100 MeV (not filled)

- Flux100_300
Integral flux from 100 to 300 MeV, in cm^-2 s^-1

- Unc_Flux100_300
1 sigma error on integral flux from 100 to 300 MeV, in cm^-2 s^-1

- Sqrt_TS100_300
Square root of the TS between 100 to 300 MeV

- Flux300_1000
Integral flux from 100 to 300 MeV, in cm^-2 s^-1

- Unc_Flux300_1000
1 sigma error on integral flux from 300 MeV to 1 GeV, in cm^-2 s^-1

- Sqrt_TS300_1000
Square root of the TS between 300 MeV to 1 GeV

- Flux1000_3000
Integral flux from 1 to 3 GeV, in cm^-2 s^-1

- Unc_Flux1000_3000
1 sigma error on integral flux from 1 to 3 GeV, in cm^-2 s^-1

- Sqrt_TS1000_3000
Square root of the TS between 1 to 3 GeV

- Flux3000_10000
Integral flux from 3 to 10 GeV, in cm^-2 s^-1

- Unc_Flux3000_10000
1 sigma error on integral flux from 3 to 10 GeV, in cm^-2 s^-1

- Sqrt_TS3000_10000
Square root of the TS between 3 to 10 GeV

- Flux10000_100000
Integral flux from 10 to 100 GeV, in cm^-2 s^-1

- Unc_Flux10000_100000
1 sigma error on integral flux from 10 to 100 GeV, in cm^-2 s^-1

- Sqrt_TS10000_100000
Square root of the TS between 10 to 100 GeV

- Variability_Index
Measure of source variability (currently simple chi-squared)

- Signif_Peak
Source significance in peak interval in sigma units

- Flux_Peak
Peak integral flux from 100 MeV to 100 GeV, in cm^-2 s^-1

- Unc_Flux_Peak
1 sigma error on peak integral flux, in cm^-2 s^-1

- Time_Peak
Time of center of interval in which peak flux was measured

- Peak_Interval
Length of interval in which peak flux was measured

- Flux_History.1 ... Flux_History.11
Integral flux from 100 MeV to 100 GeV in time interval 1 ... 11, in cm^-2 s^-1

- Unc_Flux_History.1 ... Unc_Flux_History.11
Error on the integral flux from 100 MeV to 100 GeV in time interval 1 ... 11, in cm^-2 s^-1, using the method indicated in Unc_Flag_History column and added in quatrature with 3% systematic component.

- Unc_Flag_History.1 ... Unc_Flag_History.11
1 if it is half of the difference between the 2 sigma upper limit and the maximum likelihood value given in Flux_History; 0 if it is the 1 sigma uncertainty derived from a significant detection in the interval.

- X0FGL_Name
Name of the corresponding 0FGL source, if any

- ASSOC_GAM1
Identification or positional associations with AGILE source

- ASSOC_GAM2
Identification or positional associations with 3EG source

- ASSOC_GAM3
Identification or positional associations with EGR source

- TEVCAT_FLAG
Positional association with a TeVCat source, P for angular size < 40', E for extended, N if no TeV association

- CLASS1
Class designation for most likely association. Capital letters indicate firm identifications; lower-case letters indicate associations: Pulsar (PSR), Pulsar wind nebula (PWN), Supernova remnant (SNR), Globular cluster (GLC), Micro-quasar object (MQO), High-mass binary (HXB), Blazar of the BL Lac type (BZB), Blazar of the FSRQ type (BZQ), Non-blazar active galaxy (AGN), Active galaxy of uncertain type (AGU), Normal galaxy (GAL), Starburst galaxy (SBG), Unassociated source ( ).

- CLASS2
2nd class designation for associated source.

- ASSOC1
Name of identified or likely associated source.

- ASSOC2
Alternate name of identified or likely associated source.

- Flags
Binary coding. See Table 4 of 1FGL paper for the definition of the various Analysis Flags.

http://fermi.gsfc.nasa.gov/ssc/data/access/lat/1yr_catalog/

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