FGL1 {fermicatsR} | R Documentation |
1FGL Catalog (Fermi Large Area Telescope First Source Catalog)
Description
Fermi Large Area Telescope First Source Catalog (1FGL). Abdo, A. A. et al., The Astrophysical Journal Supplement Series, 188, 405 (2010).
Usage
FGL1
Format
A data frame with 89 variables on 1451 gamma-ray sources.
Details
Initial Release: 14 Jan 2010 Latest Release: gll_psc_v03.fit (9 February 2010)
Fields
- 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.
Source
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/1yr_catalog/