Description Usage Format Fields Source

The Second Catalog of Hard Fermi-LAT Sources (2FHL). Ackermann, M. et al., The Astrophysical Journal Supplement Series, 222, 5 (2016). FITS Filename: gll_psch_v08.fit, released 16 Sept 2015.

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A data frame with 42 variables on 360 sources.

- Source_Name
2FHL JHHMM.m+DDMM, 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. A Source_Name ending with "e" indicates an extended source.

- RAJ2000
Right Ascension, J2000

- DEJ2000
Declination, J2000

- GLON
Galactic longitude, deg.

- GLAT
Galactic latitude, deg.

- Pos_err_68
Position uncertainty at 68% confidence level

- TS
Test Statistic

- Spectral_Index
Best fit photon number power-law index

- Unc_Spectral_Index
1 sigma error on Spectral_Index

- Intr_Spectral_Index_D11
Intrinsic spectral index computed using the Dominguez et al. (2011b) EBL model

- Unc_Intr_Spectral_Index_D11
1 sigma uncertainty on the intrinsic spectral index computed using the Dominguez et al. (2011b) EBL model

- Intr_Spectral_Index_G12
Intrinsic spectral index computed using the Gilmore et al. (2012) EBL model

- Unc_Intr_Spectral_Index_G12
1 sigma uncertainty on the intrinsic spectral index computed using the Gilmore et al. (2012) EBL model

- Flux50
Integral photon flux from 50 GeV to 2 TeV, photon cm^-2 s^-1

- Unc_Flux50
1 sigma uncertainty on integral flux from 50 GeV to 2 TeV, photon cm^-2 s^-1

- Energy_Flux50
Energy flux from 50 GeV to 2 TeV, erg cm^-2 s^-1

- Unc_Energy_Flux50
1 sigma error on energy flux from 50 GeV to 2 TeV, erg cm^-2 s^-1

- Flux50_171GeV
Integral photon flux from 50 to 171 GeV, cm^-2 s^-1

- Unc_Flux50_171GeV.1
(lower) 1 sigma error on integral photon flux from 50 to 171 GeV, cm^-2 s^-1, set to NaN if 1 sigma interval contains 0

- Unc_Flux50_171GeV.2
(upper) 1 sigma error on integral photon flux from 50 to 171 GeV, cm^-2 s^-1

- Sqrt_TS50_171GeV
Square root of Test Statistic between 50 and 171 GeV

- Flux171_585GeV
Integral photon flux from 171 to 585 GeV, cm^-2 s^-1

- Unc_Flux171_585GeV.1
(lower) 1 sigma error on integral photon flux from 171 to 585 GeV, cm^-2 s^-1, set to NaN if 1 sigma interval contains 0

- Unc_Flux171_585GeV.2
(upper) 1 sigma error on integral photon flux from 171 to 585 GeV, cm^-2 s^-1

- Sqrt_TS171_585GeV
Square root of Test Statistic between 171 and 585 GeV

- Flux585_2000GeV
Integral photon flux from 585 GeV to 2 TeV, cm^-2 s^-1

- Unc_Flux585_2000GeV.1
(lower) 1 sigma error on integral photon flux from 585 GeV to 2 TeV, cm^-2 s^-1, set to NaN if 1 sigma interval contains 0

- Unc_Flux585_2000GeV.2
(upper) 1 sigma error on integral photon flux from 585 GeV to 2 TeV, cm^-2 s^-1

- Sqrt_TS585_2000GeV
Square root of Test Statistic between 585 GeV and 2 TeV

- Npred
Predicted number of photons from the source

- HEP_Energy
Highest photon energy, GeV

- HEP_Prob
Probability that the HEP is coming from the source, >=0.85

- ROI
Region of interest number

- ASSOC
Name of the most likely associated source

- ASSOC_PROB_BAY
Probability of association from the Bayesian method

- ASSOC_PROB_LR
Probability of association from the likelihood ratio method

- CLASS
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), Supernova remnant/Pulsar wind nebula (spp), High-mass binary (hmb), Binary (bin), Star-forming region (sfr), BL Lac type of blazar (bll), BL Lac type of blazar with prominent galaxy emission (bll-g), FSRQ type of blazar (fsrq), Non-blazar active galaxy (agn), Radio galaxy (rdg), Radio galaxy/BL Lac (rdg/bll), Blazar candidate of uncertain type I (bcu I), Blazar candidate of uncertain type II (bcu II), Blazar candidate of uncertain type III (bcu III), Normal galaxy, or part (gal), Galaxy cluster (galclu), Unassociated source ( ).

- Redshift
Redshift (when available) of the most likely associated source

- NuPeak_obs
Observed Synchrotron peak frequency, Hz

- X3FGL_Name
Name of the most likely associated source in 3FGL

- X1FHL_Name
Name of the most likely associated source in the 1FHL

- TeVCat_Name
Name of the most likely associated source in the TeVCat

http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2FHL/

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