IX/67 Incremental Fermi LAT 4th source cat. (4FGL-DR3) (Fermi-LAT col., 2022)
Incremental Fermi Large Area Telescope fourth source catalog.
Abdollahi S., Acero F., Baldini L., Ballet J., Bastieri D.,
Bellazzini R., Berenji B., Berretta A., Bissaldi E., Blandford R.D.,
Bloom E., Bonino R., Brill A., Britto R.J., Bruel P., Burnett T.H.,
Buson S., Cameron R.A., Caputo R., Caraveo P.A., Castro D., Chaty S.,
Cheung T.C., Chiaro G., Cibrario N., Ciprini S., Coronado-Blazquez J.,
Crnogorcevic M., Cutini S., D'Ammando F., De Gaetano S., Digel S.W.,
Di Lalla N., Dirirsa F.F., Di Venere L., Dominguez A., Fallah R.V.,
Fegan S.J., Ferrara E.C., Fiori A., Fleischhack H., Franckowiak A.,
Fukazawa Y., Funk S., Fusco P., Galanti G., Gammaldi V., Gargano F.,
Garrappa S., Gasparrini D., Giacchino F., Giglietto N., Giordano F.,
Giroletti M., Glanzman T., Green D., Grenier I.A., Grondin M.-H.,
Guillemot L., Guiriec S., Gustafsson M., Harding A.K., Hays L.,
Hewitt J.W., Horan D., Hou X., Johannesson G., Karwin C.M., Kayanoki T.,
Kerr M.T., Kuss M., Landriu D., Larsson S., Latronico L.,
Lemoine-Goumard M., Li J., Liodakis I., Longo F., Loparco F., Lott B.,
Lubrano P., Maldera S., Malyshev D., Manfreda A., Marti-Devesa G.,
Mazziotta M.N., Mereu I., Meyer M., Michelson P.F., Mirabal N.,
Mitthumsiri W., Mizuno T., Moiseev A.A., Monzani M.E., Morselli A.,
Moskalenko I.V., Negro M., Nuss E., Omodei N., Orienti M., Orlando E.,
Paneque D., Pei Z., Perkins J.S., Persic M., Pesce-Rollins M.,
Petrosian V., Pillera R., Poon H., Porter T.A., Principe G., Raino S.,
Rando R., Rani B., Razzano M., Razzaque S., Reimer A., Reimer O.,
Reposeur T., Sanchez-Conde M.A., Saz Parkinson P.M., Scotton L., Serini D.,
Sgro C., Siskind E.J., Smith D.A., Spandre G., Spinelli P., Sueoka K.,
Suson D.J., Tajima H., Tak D., Thayer J.B., Thompson D.J., Torres D.F.,
Troja E., Valverde J., Wood K., Zaharijas G., The Fermi-LAT collaboration
<Astrophys. J. Suppl. Ser., 260, 53 (2022)>
=2022ApJS..260...53A 2022ApJS..260...53A
=2022arXiv220111184F 2022arXiv220111184F
ADC_Keywords: Gamma rays; Surveys
Mission_Name: Fermi
Keywords: Astrophysics - High Energy Astrophysical Phenomena
Abstract:
We present an incremental version (4FGL-DR3, for Data Release 3) of
the fourth Fermi-LAT catalog of gamma-ray sources. Based on the first
twelve years of science data in the energy range from 50MeV to 1TeV,
it contains 6658 sources. The analysis improves on that used for the
fourth Fermi Gamma-ray LAT (4FGL) catalog over eight years of data:
more sources are fit with curved spectra, we introduce a more robust
spectral parameterization for pulsars, and we extend the spectral
points to 1TeV. The spectral parameters, spectral energy
distributions, and associations are updated for all sources. Light
curves are rebuilt for all sources with 1yr intervals (not 2 month
intervals). Among the 5064 original 4FGL sources, 16 were deleted, 112
are formally below the detection threshold over 12yr (but are kept in
the list), while 74 are newly associated, 10 have an improved
association, and seven associations were withdrawn. Pulsars are split
explicitly between young and millisecond pulsars. Pulsars and binaries
newly detected in LAT sources, as well as more than 100 newly
classified blazars, are reported. We add three extended sources and
1607 new point sources, mostly just above the detection threshold,
among which eight are considered identified, and 699 have a plausible
counterpart at other wavelengths. We discuss degree-scale residuals to
the global sky model and clusters of soft unassociated point sources
close to the Galactic plane, which are possibly related to limitations
of the interstellar emission model and missing extended sources.
Description:
The Fermi Large Area Telescope (LAT) data for the 4FGL-DR3 catalog
were taken during the period 2008-August-4 (15:43 UTC) to
2020-August-2 (8:33 UTC) covering twelve years.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
4fgldr3.dat 1953 6659 The incremental 4th Fermi LAT point source catalog,
Data Release 3 (4FGL-DR3) -- 12 years
lcs/* . 6658 *The individual 1yr light curves in PDF format
--------------------------------------------------------------------------------
Note on lcs/*: the light curve for J0534.5+2201i and J0534.5+2201s (Crab Nebula)
is the same; named J0534.5+2201.pdf
--------------------------------------------------------------------------------
Description of file: The original FITS file "gllpscv30.fit" is also
available on the FTP section.
See also:
J/ApJS/247/33 : The Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/ : LAT data products
Byte-by-byte Description of file: 4fgldr3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [4FGL]
6- 18 A13 --- 4FGL The 4FGL name (JHHMM.m+DDMMa)
(Source_Name) (1)
20 I1 --- DR [1/3] Data release number
(DataRelease) (2)
22- 29 F8.4 deg RAdeg Right ascension in decimal
degrees (J2000) (RAJ2000)
31- 38 F8.4 deg DEdeg Declination in decimal
degrees (J2000) (DEJ2000)
40- 49 F10.6 deg GLON Galactic longitude
51- 60 F10.6 deg GLAT [-88/88.7] Galactic latitude
62- 69 F8.6 deg amaj68 [0.004/0.6]? Long radius of
error ellipse at 68%
confidence
(Conf68SemiMajor) (3)
71- 78 F8.6 deg bmin68 [0.004/0.4]? Short radius of
error ellipse at 68%
confidence
(Conf68SemiMinor) (3)
80- 85 F6.2 deg PA68 [-90/90]? Position angle of
the 68% ellipse
(Conf68PosAng) (3)
87- 92 F6.4 deg amaj95 [0.007/0.9]? Long radius of
error ellipse at 95%
confidence
(Conf95SemiMajor)
94- 99 F6.4 deg bmin95 [0.007/0.7]? Short radius of
error ellipse at 95%
confidence
(Conf95SemiMinor)
101- 106 F6.2 deg PA95 [-90/90]? Position angle
(eastward) of the long axis
from celestial north
(Conf95PosAng)
108- 111 I4 --- ROI [1/1988] ROI number (ROI_num)
113- 129 A17 --- Name Cross-reference to the
ExtendedSources extension
(ExtendedSourceName)
131- 139 F9.5 --- Sig [1.6/885]? Source
significance in σ
units over the 100MeV to
1TeV band (Signif_Avg)
141- 150 F10.3 MeV E0 [49.6/195055] Energy at
which error on differential
flux is minimal
(Pivot_Energy)
152- 163 E12.6 cm-2.ph.s-1 F1000i [3.7e-13/1.4e-6] Integral
photon flux from 1 to 100GeV
(Flux1000)
165- 176 E12.6 cm-2.ph.s-1 e_F1000i [1.5e-13/4e-9]? F1000i
uncertainty (Unc_Flux1000)
178- 189 E12.6 mW/m2 EF100 [3.7e-13/9.3e-9] Energy flux
from 100MeV to 100GeV
obtained by spectral fitting
in erg/cm2/s
(Energy_Flux100)
191- 202 E12.6 mW/m2 e_EF100 [1e-13/3.1e-11]? EF100
uncertainty
(UncEnergyFlux100)
204- 219 A16 --- Mod Spectral type in the global
model (PowerLaw,
LogParabola,
PLSuperExpCutoff)
(SpectrumType)
221- 232 E12.6 cm-2.MeV-1.ph.s-1 FpivPL [2.6e-17/2.4e-7]?
Differential flux at Pivot
Energy in PowerLaw fit
(PLFluxDensity)
234- 245 E12.6 cm-2.MeV-1.ph.s-1 e_FpivPL [1e-17/1.8e-8]? FpivPL
uncertainty
(UncPLFlux_Density)
247- 253 F7.5 --- PLGam [1/3.4]? Photon index when
fitting with PowerLaw
(PL_Index)
255- 262 F8.6 --- e_PLGam [0.0005/0.6]? PLGam
uncertainty (UncPLIndex)
264- 275 E12.6 cm-2.MeV-1.ph.s-1 FpivLP [3.6e-17/1.8e-7]
Differential flux at Pivot
Energy in LogParabola fit
(LPFluxDensity)
277- 288 E12.6 cm-2.MeV-1.ph.s-1 e_FpivLP [1.8e-17/9e-9]? FpivLP
uncertainty
(UncLPFlux_Density)
290- 298 F9.6 --- LPalpha [-0.05/3.5] Photon index at
Pivot Energy (α of Eq.
1) when fitting with
LogParabola (LP_Index)
300- 307 F8.6 --- e_LPalpha [0.002/3]? LPalpha
uncertainty (UncLPIndex)
309- 317 F9.6 --- LPbeta [-0.16/1] Curvature
parameter (β of Eq. 1)
when fitting with
LogParabola (LP_beta)
319- 326 F8.6 --- e_LPbeta [0.002/1.8]? LPbeta
uncertainty (UncLPbeta)
328- 337 F10.6 --- SigCurv1 [0/240] Significance (in
σ units) of the fit
improvement between PowerLaw
and LogParabola (LP_SigCurv)
339- 350 E12.6 MeV LPEPk [0.03/1.2e+8]? Peak energy
in nuFnu estimated from the
LogParabola model (LP_EPeak)
352- 363 E12.6 MeV e_LPEPk [0.5/1.1e+10]? LPEPk
uncertainty (UncLPEPeak)
365- 376 E12.6 cm-2.MeV-1.ph.s-1 FpivPLEC [4e-17/1.8e-7]? Differential
flux at Pivot Energy in
PLSuperExpCutoff fit
(PLECFluxDensity)
378- 389 E12.6 cm-2.MeV-1.ph.s-1 e_FpivPLEC [2e-17/1.2e-8]? FpivPLEC
uncertainty
(UncPLECFlux_Density)
391- 399 F9.6 --- PLECGamS [-0.16/3.4]? Photon index at
Pivot Energy (ΓS of
Eq. 2) when fitting with
PLSuperExpCutoff
(PLEC_IndexS)
401- 408 F8.6 --- e_PLECGamS [0.004/4.7]? PLECGamS
uncertainty
(UncPLECIndexS)
410- 418 F9.6 --- PLECCd [-0.4/5.5]? Spectral
curvature at Pivot Energy (d
of Eq. 2) when fitting with
PLSuperExpCutoff
(PLEC_ExpfactorS)
420- 427 F8.6 --- e_PLECCd [0/9.7]? PLECCd uncertainty
(UncPLECExpfactorS)
429- 436 F8.6 --- PLECCb [0.2/1]? Exponential index
(b of Eq. 2) when fitting
with PLSuperExpCutoff
(PLECExpIndex)
438- 445 F8.6 --- e_PLECCb [0.01/0.15]? PLECCb
uncertainty
(UncPLECExp_Index)
447- 456 F10.6 --- SigCurv2 [0/245] Significance (in
σ units) of the fit
improvement between PowerLaw
and PLSuperExpCutoff
(PLEC_SigCurv)
458- 469 E12.6 MeV PLECEPk [0.05/5e+6]? Peak energy in
nuFnu estimated from the
PLSuperExpCutoff model
(PLEC_EPeak)
471- 482 E12.6 MeV e_PLECEPk [9.2/2.1e+8]? PLECEPk
uncertainty (UncPLECEPeak)
484- 494 F11.4 --- Npred [5.9/261899] Predicted
number of events in the
model
496- 507 E12.6 ph.cm-2.s-1 F50 [4.5e-19/5.4e-6] Integral
photon flux in 50-100MeV
(Band 1) (Flux_Band1)
509- 520 E12.6 ph.cm-2.s-1 F100 [7.6e-20/5.6e-6] Integral
photon flux in 100-300MeV
(Band 2) (Flux_Band2)
522- 533 E12.6 ph.cm-2.s-1 F300 [5e-20/3.4e-6] Integral
photon flux in 300MeV-1GeV
(Band 3) (Flux_Band3)
535- 546 E12.6 ph.cm-2.s-1 F1000 [7.3e-18/1.1e-6] Integral
photon flux in 1-3GeV
(Band 4) (Flux_Band4)
548- 559 E12.6 ph.cm-2.s-1 F3000 [3.3e-20/2.3e-7] Integral
photon flux in 3-10GeV
(Band 5) (Flux_Band5)
561- 572 E12.6 ph.cm-2.s-1 F10000 [2.7e-24/1.2e-8] Integral
photon flux in 10-30GeV
(Band 6) (Flux_Band6)
574- 585 E12.6 ph.cm-2.s-1 F30000 [3.9e-26/4.7e-9] Integral
photon flux in 30-100GeV
(Band 7) (Flux_Band7)
587- 598 E12.6 ph.cm-2.s-1 F100000 [0/1.7e-9] Integral photon
flux in 100GeV-1TeV (Band 8)
(Flux_Band8)
600- 611 E12.6 ph.cm-2.s-1 e_F50 [-3.9e-7/-5.3e-9]? Lower
uncertainty on F50
(LoUncFluxBand1) (4)
613- 624 E12.6 ph.cm-2.s-1 E_F50 ? Upper uncertainty on F50
(UpUncFluxBand1) (4)
626- 637 E12.6 ph.cm-2.s-1 e_F100 [-5e-7/-5.3e-10]? Lower
uncertainty on F100
(LoUncFluxBand2) (4)
639- 650 E12.6 ph.cm-2.s-1 E_F100 ? Upper uncertainty on F100
(upUncFluxBand2) (4)
652- 663 E12.6 ph.cm-2.s-1 e_F300 [-4.1e-8/-5.7e-11]? Lower
uncertainty on F300
(LoUncFluxBand3) (4)
665- 676 E12.6 ph.cm-2.s-1 E_F300 ? Upper uncertainty on F300
(upUncFluxBand3) (4)
678- 689 E12.6 ph.cm-2.s-1 e_F1000 [-4.4e-9/-9.2e-12]? Lower
uncertainty on F1000
(LoUncFluxBand4) (4)
691- 702 E12.6 ph.cm-2.s-1 E_F1000 ? Upper uncertainty on F1000
(upUncFluxBand4) (4)
704- 715 E12.6 ph.cm-2.s-1 e_F3000 [-1.1e-9/-2.7e-12]? Lower
uncertainty on F3000
(LoUncFluxBand5) (4)
717- 728 E12.6 ph.cm-2.s-1 E_F3000 ? Upper uncertainty on F3000
(upUncFluxBand5) (4)
730- 741 E12.6 ph.cm-2.s-1 e_F10000 [-4.4e-10/-1e-12]? Lower
uncertainty on F10000
(LoUncFluxBand6) (4)
743- 754 E12.6 ph.cm-2.s-1 E_F10000 [1.9e-12/4.5e-10]? Upper
uncertainty on F10000
(upUncFluxBand6) (4)
756- 767 E12.6 ph.cm-2.s-1 e_F30000 [-1.7e-10/-8.9e-13]? Lower
uncertainty on F30000
(LoUncFluxBand7) (4)
769- 780 E12.6 ph.cm-2.s-1 E_F30000 ? Upper uncertainty on F30000
(upUncFluxBand7) (4)
782- 793 E12.6 ph.cm-2.s-1 e_F100000 [-9.9e-11/-8.9e-13]? Lower
uncertainty on F100000
(LoUncFluxBand8) (4)
795- 806 E12.6 ph.cm-2.s-1 E_F100000 [1.7e-12/9.9e-11]? Upper
uncertainty on F100000
(upUncFluxBand8) (4)
808- 819 E12.6 mW/m2 nuFnu50 [7.8e-23/8.9e-10] Spectral
energy distribution over
50-100MeV in erg/cm2/s
(nuFnu_Band1)
821- 832 E12.6 mW/m2 nuFnu100 [1.8e-23/1.5e-9] Spectral
energy distribution over
100-300MeV in erg/cm2/s
(nuFnu_Band2)
834- 845 E12.6 mW/m2 nuFnu300 [3.6e-23/2.5e-9] Spectral
energy distribution over
300MeV-1GeV in erg/cm2/s
(nuFnu_Band3)
847- 858 E12.6 mW/m2 nuFnu1000 [2e-20/2.6e-9] Spectral
energy distribution over
1-3GeV in erg/cm2/s
(nuFnu_Band4)
860- 871 E12.6 mW/m2 nuFnu3000 [1.7e-22/1.4e-9] Spectral
energy distribution over
3-10GeV in erg/cm2/s
(nuFnu_Band5)
873- 884 E12.6 mW/m2 nuFnu10000 [6e-26/2.3e-10] Spectral
energy distribution over
10-30GeV in erg/cm2/s
(nuFnu_Band6)
886- 897 E12.6 mW/m2 nuFnu30000 [2e-27/3.2e-10] Spectral
energy distribution over
30-100GeV in erg/cm2/s
(nuFnu_Band7)
899- 910 E12.6 mW/m2 nuFnu100000 [0/2.6e-10] Spectral energy
distribution over
100GeV-1TeV in erg/cm2/s
(nuFnu_Band8)
912- 921 F10.6 --- TS50 [0/26]? Square root of the
Test Statistic in 50-100MeV
(SqrtTSBand1)
923- 932 F10.6 --- TS100 [0/142]? Square root of the
Test Statistic in 100-300MeV
(SqrtTSBand2)
934- 943 F10.6 --- TS300 [0/388]? Square root of the
Test Statistic in
300MeV-1GeV (SqrtTSBand3)
945- 954 F10.6 --- TS1000 [0/581]? Square root of the
Test Statistic in 1-3GeV
(SqrtTSBand4)
956- 965 F10.6 --- TS3000 [0/498]? Square root of the
Test Statistic in 3-10GeV
(SqrtTSBand5)
967- 976 F10.6 --- TS10000 [0/189]? Square root of the
Test Statistic in 10-30GeV
(SqrtTSBand6)
978- 987 F10.6 --- TS30000 [0/107]? Square root of the
Test Statistic in 30-100GeV
(SqrtTSBand7)
989- 998 F10.6 --- TS100000 [0/68]? Square root of the
Test Statistic in
100GeV-1TeV (SqrtTSBand8)
1000- 1010 F11.5 --- VarInd [1.59/84341]? Variability
(Variability_Index) (5)
1012- 1019 F8.6 --- fVar [0/3]? Fractional
variability computed from
the fluxes in each year
(Frac_Variability)
1021- 1029 F9.6 --- e_fVar [0.003/10]? fVar uncertainty
(UncFracVariability)
1031- 1039 F9.5 --- SigPk [3.4/413]? Source
significance in peak
interval in σ units
(Signif_Peak)
1041- 1052 E12.6 ph.cm-2.s-1 FPk [1.8e-10/5.1e-6]? Peak
integral photon flux from
100MeV to 100GeV (Flux_Peak)
1054- 1065 E12.6 ph.cm-2.s-1 e_FPk [7e-11/3.4e-8]? FPk
uncertainty (UncFluxPeak)
1067- 1075 I9 s TPk [255223712/602270016]? Time
of center of interval in
which peak flux was measured
(Time_Peak)
1077- 1088 E12.6 s IntPk [3.1e+7/3.2e+7]? Length of
interval in which peak flux
was measured (Peak_Interval)
1090- 1101 E12.6 ph.cm-2.s-1 F100y1 [1.7e-21/1.1e-5] Integral
photon flux from 100 MeV to
100 GeV in year 1
(Flux_History1)
1103- 1114 E12.6 ph.cm-2.s-1 F100y2 Integral photon flux from
100 MeV to 100 GeV in year 2
(Flux_History2)
1116- 1127 E12.6 ph.cm-2.s-1 F100y3 Integral photon flux from
100 MeV to 100 GeV in year 3
(Flux_History3)
1129- 1140 E12.6 ph.cm-2.s-1 F100y4 Integral photon flux from
100 MeV to 100 GeV in year 4
(Flux_History4)
1142- 1153 E12.6 ph.cm-2.s-1 F100y5 Integral photon flux from
100 MeV to 100 GeV in year 5
(Flux_History5)
1155- 1166 E12.6 ph.cm-2.s-1 F100y6 Integral photon flux from
100 MeV to 100 GeV in year 6
(Flux_History6)
1168- 1179 E12.6 ph.cm-2.s-1 F100y7 Integral photon flux from
100 MeV to 100 GeV in year 7
(Flux_History7)
1181- 1192 E12.6 ph.cm-2.s-1 F100y8 [1.7e-22/1.1e-5] Integral
photon flux from 100 MeV to
100 GeV in year 8
(Flux_History8)
1194- 1205 E12.6 ph.cm-2.s-1 F100y9 [3.2e-21/1.1e-5] Integral
photon flux from 100 MeV to
100 GeV in year 9
(Flux_History9)
1207- 1218 E12.6 ph.cm-2.s-1 F100y10 Integral photon flux from
100 MeV to 100 GeV in year
10 (Flux_History10)
1220- 1231 E12.6 ph.cm-2.s-1 F100y11 Integral photon flux from
100 MeV to 100 GeV in year
11 (Flux_History11)
1233- 1244 E12.6 ph.cm-2.s-1 F100y12 [1e-22/1.1e-5] Integral
photon flux from 100 MeV to
100 GeV in year 12
(Flux_History12)
1246- 1257 E12.6 ph.cm-2.s-1 e_F100y1 [-6.4e-8/-1.7e-11]? Lower
uncertainty on F100y1
(loUncFluxHistory1) (4)
1259- 1270 E12.6 ph.cm-2.s-1 E_F100y1 ? Upper uncertainty on F100y1
(upUncFluxHistory1) (4)
1272- 1283 E12.6 ph.cm-2.s-1 e_F100y2 [-6.3e-8/-1.4e-11]? Lower
uncertainty on F100y2
(loUncFluxHistory2) (4)
1285- 1296 E12.6 ph.cm-2.s-1 E_F100y2 ? Upper uncertainty on F100y2
(upUncFluxHistory2) (4)
1298- 1309 E12.6 ph.cm-2.s-1 e_F100y3 [-6.3e-8/-1.4e-11]? Lower
uncertainty on F100y3
(loUncFluxHistory3) (4)
1311- 1322 E12.6 ph.cm-2.s-1 E_F100y3 ? Upper uncertainty on F100y3
(upUncFluxHistory3) (4)
1324- 1335 E12.6 ph.cm-2.s-1 e_F100y4 [-6.3e-8/-1.3e-11]? Lower
uncertainty on F100y4
(loUncFluxHistory4) (4)
1337- 1348 E12.6 ph.cm-2.s-1 E_F100y4 ? Upper uncertainty on F100y4
(upUncFluxHistory4) (4)
1350- 1361 E12.6 ph.cm-2.s-1 e_F100y5 [-6.4e-8/-1.7e-11]? Lower
uncertainty on F100y5
(loUncFluxHistory5) (4)
1363- 1374 E12.6 ph.cm-2.s-1 E_F100y5 ? Upper uncertainty on F100y5
(upUncFluxHistory5) (4)
1376- 1387 E12.6 ph.cm-2.s-1 e_F100y6 [-6.5e-8/-1.4e-11]? Lower
uncertainty on F100y6
(loUncFluxHistory6) (4)
1389- 1400 E12.6 ph.cm-2.s-1 E_F100y6 ? Upper uncertainty on F100y6
(upUncFluxHistory6) (4)
1402- 1413 E12.6 ph.cm-2.s-1 e_F100y7 [-6.5e-8/-1.5e-11]? Lower
uncertainty on F100y7
(loUncFluxHistory7) (4)
1415- 1426 E12.6 ph.cm-2.s-1 E_F100y7 ? Upper uncertainty on F100y7
(upUncFluxHistory7) (4)
1428- 1439 E12.6 ph.cm-2.s-1 e_F100y8 [-6.3e-8/-1.6e-11]? Lower
uncertainty on F100y8
(loUncFluxHistory8) (4)
1441- 1452 E12.6 ph.cm-2.s-1 E_F100y8 ? Upper uncertainty on F100y8
(upUncFluxHistory8) (4)
1454- 1465 E12.6 ph.cm-2.s-1 e_F100y9 [-6.3e-8/-1.8e-11]? Lower
uncertainty on F100y9
(loUncFluxHistory9) (4)
1467- 1478 E12.6 ph.cm-2.s-1 E_F100y9 ? Upper uncertainty on F100y9
(upUncFluxHistory9) (4)
1480- 1491 E12.6 ph.cm-2.s-1 e_F100y10 [-5.9e-8/-1.8e-11]? Lower
uncertainty on F100y10
(loUncFluxHistory10) (4)
1493- 1504 E12.6 ph.cm-2.s-1 E_F100y10 ? Upper uncertainty on
F100y10
(upUncFluxHistory10) (4)
1506- 1517 E12.6 ph.cm-2.s-1 e_F100y11 [-6.2e-8/-1.7e-11]? Lower
uncertainty on F100y11
(loUncFluxHistory11) (4)
1519- 1530 E12.6 ph.cm-2.s-1 E_F100y11 ? Upper uncertainty on
F100y11
(upUncFluxHistory11) (4)
1532- 1543 E12.6 ph.cm-2.s-1 e_F100y12 [-5.8e-8/-1.3e-11]? Lower
uncertainty on F100y12
(loUncFluxHistory12) (4)
1545- 1556 E12.6 ph.cm-2.s-1 E_F100y12 ? Upper uncertainty on
F100y12
(upUncFluxHistory12) (4)
1558- 1567 F10.6 --- TS100y1 [0/427] Square root of the
Test Statistic in year 1
(SqrtTSHistory1)
1569- 1578 F10.6 --- TS100y2 Square root of the Test
Statistic in year 2
(SqrtTSHistory2)
1580- 1589 F10.6 --- TS100y3 Square root of the Test
Statistic in year 3
(SqrtTSHistory3)
1591- 1600 F10.6 --- TS100y4 Square root of the Test
Statistic in year 4
(SqrtTSHistory4)
1602- 1611 F10.6 --- TS100y5 Square root of the Test
Statistic in year 5
(SqrtTSHistory5)
1613- 1622 F10.6 --- TS100y6 Square root of the Test
Statistic in year 6
(SqrtTSHistory6)
1624- 1633 F10.6 --- TS100y7 Square root of the Test
Statistic in year 7
(SqrtTSHistory7)
1635- 1644 F10.6 --- TS100y8 [0/390] Square root of the
Test Statistic in year 8
(SqrtTSHistory8)
1646- 1655 F10.6 --- TS100y9 Square root of the Test
Statistic in year 9
(SqrtTSHistory9)
1657- 1666 F10.6 --- TS100y10 Square root of the Test
Statistic in year 10
(SqrtTSHistory10)
1668- 1677 F10.6 --- TS100y11 Square root of the Test
Statistic in year 11
(SqrtTSHistory11)
1679- 1688 F10.6 --- TS100y12 [0/360] Square root of the
Test Statistic in year 12
(SqrtTSHistory12)
1690- 1707 A18 --- Asso4FGL Correspondence to 4FGL
source catalog, if any
(ASSOC_4FGL)
1709- 1726 A18 --- FGL Most recent correspondence
to FGL source catalogs prior
to 4FGL, if any (ASSOC_FGL)
1728- 1745 A18 --- FHL Most recent correspondence
to previous FHL source
catalogs, if any (ASSOC_FHL)
1747- 1762 A16 --- 2AGL Name of likely corresponding
2AGL source, if any
(ASSOC_GAM1)
1764- 1777 A14 --- 3EG Name of likely corresponding
3EG source, if any
(ASSOC_GAM2)
1779- 1793 A15 --- EGR Name of likely corresponding
EGR source, if any
(ASSOC_GAM3)
1795 A1 --- f_TeVCat Flag on TeVCat (TEVCAT_FLAG)
1797- 1817 A21 --- TeVCat Name of likely corresponding
TeV source from TeVCat, if
any (ASSOC_TEV)
1819- 1823 A5 --- Cl1 Class designation for
associated source; see
Table 5 (CLASS1) (6)
1825- 1829 A5 --- Cl2 Class designation for
low-confidence association
(CLASS2)
1831- 1858 A28 --- Assoc1 Name of identified or likely
associated source (ASSOC1)
1860- 1887 A28 --- Assoc2 Name of low-confidence
association or of enclosing
extended source (ASSOC2)
1889- 1896 F8.6 --- ProbBy [0/1]? Probability of
association according to the
Bayesian method
(ASSOCPROBBAY) (7)
1898- 1905 F8.6 --- ProbLR [0/1]? Probability of
association according to the
Likelihood Ratio method
(ASSOCPROBLR) (8)
1907- 1920 F14.10 deg RACdeg ? Right ascension of the
counterpart Assoc1 (J2000)
(RA_Counterpart)
1922- 1935 F14.10 deg DECdeg ? Declination of the
counterpart Assoc2 (J2000)
(DEC_Counterpart)
1937- 1947 F11.9 deg errPos [3e-9/2.5]? 95% precision of
the counterpart localization
(Unc_Counterpart) (9)
1949- 1953 I5 --- Flags [0/14336] Source flags
(binary coding as in
Table 4) (10)
--------------------------------------------------------------------------------
Note (1): The coordinates are rounded, following the International Astronomical
Union convention. The letter at the end can be c (coincident with
interstellar clump), e (extended source), i (for Crab nebula inverse
Compton) or s (for Crab nebula synchrotron).
Note (2): 1 for DR1, 2 for new in DR2, 3 for new or changed in DR3
Note (3): From the 95% ellipse, assuming a Gaussian distribution.
Note (4): Separate 1σ errors are computed from the likelihood profile
toward lower and larger fluxes. The lower error is set equal to NULL,
and the upper error is derived from a Bayesian upper limit if the 1σ
interval contains 0 (TS<1).
Note (5): Sum of 2xlog(Likelihood) difference between the flux fitted in each
time interval and the average flux over the full catalog interval; a
value greater than 24.72 over 12 intervals indicates <1% chance of
being a steady source.
Note (6): Class as in Table 5:
Designations shown in capital letters are firm identifications.
Code as follows:
GC = Galactic center (1 occurrence)
PSR = Young pulsar, identified by pulsations (135 occurrences)
MSP = Millisecond pulsars, identified by pulsations (120 occurrences)
PWN = Pulsar wind nebula (12 occurrences)
SNR = Supernova remnant (24 occurrences)
SFR = Star-forming region (3 occurrences)
HMB = High-mass binary (8 occurrences)
LMB = Low-mass binary (2 occurrences)
BIN = Binary (1 occurrence)
NOV = Nova (4 occurrences)
BLL = BL Lac type of blazar (22 occurrences)
FSRQ = FSRQ type of blazar (44 occurrences)
RDG = Radio galaxy (6 occurrences)
AGN = Non-blazar active galaxy (1 occurrence)
BCU = Blazar candidate of uncertain type (1 occurrence)
NLSY1 = Narrow-line Seyfert 1 (4 occurrences)
GAL = Normal galaxy (or part) (2 occurrences)
Designations shown in lower case letters indicate associations:
psr = Young pulsar, no pulsations seen in LAT yet (2 occurrences)
msp = Millisecond pulsars, no pulsations seen in LAT yet (35 occurrences)
pwn = Pulsar wind nebula (8 occurrences)
snr = Supernova remnant (19 occurrences)
spp = Supernova remnant/Pulsar wind nebula (114 occurrences)
glc = Globular cluster (35 occurrences)
sfr = Star-forming region (2 occurrences)
hmb = High-mass binary (3 occurrences)
lmb = Low-mass binary (6 occurrences)
bll = BL Lac type of blazar (1434 occurrences)
fsrq = FSRQ type of blazar (750 occurrences)
rdg = Radio galaxy (39 occurrences)
agn = Non-blazar active galaxy (8 occurrences)
ssrq = Steep spectrum radio quasar (2 occurrences)
css = Compact Steep Spectrum radio source (5 occurrences)
bcu = Blazar candidate of uncertain type (1492 occurrences)
nlsy1 = Narrow-line Seyfert 1 (4 occurrences)
sey = Seyfert galaxy (2 occurrences)
sbg = Starburst galaxy (8 occurrences)
gal = Normal galaxy (or part) (4 occurrences)
unk = Unknown (134 occurrences)
Note (7): Blank values in this column when Assoc1 is defined means that the
probability could not be computed, either because the source is
extended or because the counterpart is the result of dedicated follow-up.
Note (8): Probabilities <0.8 are formally set to 0.
Note (9): For extended counterparts, this reports their extension radius.
Note (10): Each condition is indicated by one bit among the 16 bits forming
Flags. The bit is raised (set to 1) in the dubious case, so that
sources without any warning sign have Flags =0.
--------------------------------------------------------------------------------
History:
Downloaded from:
http://fermi.gsfc.nasa.gov/ssc/data/access/lat/12yr_catalog/
(LAT 12-yr source catalog: gllpscv30.fit and
Plots of 1-yr light curves for 4FGL-DR3 sources: 4FGL-DR3LcPlotsv29.tgz)
(End) Emmanuelle Perret [CDS] 01-Jul-2022