J/ApJ/897/10 Doppler factor estimation for 350 Fermi blazars (Zhang+, 2020)
Doppler factor estimation for Fermi blazars.
Zhang L., Chen S., Xiao H., Cai J., Fan J.
<Astrophys. J., 897, 10 (2020)>
=2020ApJ...897...10Z 2020ApJ...897...10Z
ADC_Keywords: BL Lac objects; QSOs; Gamma rays; Redshifts
Keywords: Active galactic nuclei ; Blazars ; High energy astrophysics ; Jets
Abstract:
In this work, we exploit the luminosity of the broad-line region (BLR)
for 50 Fermi blazars through matching the coordinates between the
Sloan Digital Sky Survey catalog, Fermi Large Area Telescope Third
Source Catalog, and the Fermi Large Area Telescope Fourth Source
Catalog and fitting their emission lines. In total, we collected a
sample of 350 blazars with broad-line emissions including 50 new
objects and 300 blazars from published works to revisit the
correlation between the γ-ray luminosity and the broad-line
luminosity, and proposed a new method to estimate the Doppler factors
based on the correlation between the radiative power of the jet and
luminosity of the BLR. We come to following conclusions. (1) For the
50 Fermi blazars, their broad-line luminosity (log LBLR) ranges from
41.82-45.2erg/s with a mean value of 44.39erg/s. (2) The Doppler
factor (δ) ranges from δ=0.35 to δ=85.66 with a mean
value of 12.54, which is consistent with the results in the
literature. (3) There are positive correlations between γ-ray
luminosity and broad-line luminosity, and between γ-ray
luminosity and the Doppler factor.
Description:
In this paper, we obtained emission-line luminosity for 50 Fermi
blazars by matching Sloan Digital Sky Survey (SDSS) with Fermi Large
Area Telescope DR3 (3FGL) and Fermi Large Area Telescope DR4 (4FGL)
and compiled emission-line luminosity for 300 Fermi blazars from the
literature and got a sample of 350 Fermi blazars. We revisited the
correlation between γ-rays and emission-line luminosity, and
proposed a new method to estimate the Doppler factor for Fermi
blazars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 98 350 Blazar sample
table3.dat 63 350 List of sources with Doppler factors
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See also:
VII/289 : SDSS quasar catalog, sixteenth data release (DR16Q) (Lyke+, 2020)
IX/67 : Incremental Fermi LAT 4th cat. (4FGL-DR3) (Fermi-LAT col., 2022)
J/A+A/436/799 : X & gamma-ray fluxes of γ-ray-loud blazars (Fan+, 2005)
J/ApJ/715/429 : First Fermi-LAT AGN catalog (1LAC) (Abdo+, 2010)
J/ApJS/188/405 : Fermi-LAT first source catalog (1FGL) (Abdo+, 2010)
J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)
J/ApJ/748/49 : Optical spectroscopy of 1LAC broad-line blazars (Shaw+, 2012)
J/other/RAA/13.259 : γ-ray Doppler factor for Fermi blazars (Fan+, 2013)
J/other/RAA/14.1135 : Doppler factor for a Fermi blazar sample (Fan+, 2014)
J/other/Nat/515.376 : Power of relativistic jets in blazars (Ghisellini+, 2014)
J/ApJS/218/23 : Fermi LAT third source catalog (3FGL) (Acero+, 2015)
J/ApJ/810/14 : Third catalog of LAT-detected AGNs (3LAC) (Ackermann+, 2015)
J/ApJS/226/20 : X-ray, opt. & radio SEDs of Fermi blazars (Fan+, 2016)
J/ApJ/835/L38 : Fermi blazars with Doppler factors (Fan+, 2017)
J/ApJS/235/39 : Jet properties of γ-ray-loud 3FGL AGNs (Chen, 2018)
J/A+A/615/A167 : Catalog of NLS1s galaxies in 6dFGS survey (Chen+, 2018)
J/AJ/155/90 : 1996-2009 optical photom. monitoring for 3C 66A (Fan+, 2018)
J/ApJ/866/137 : Bright blazars variability brightness temp. (Liodakis+, 2018)
J/ApJS/247/33 : The Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Blazar name
19- 43 A25 --- OName Other name
45- 49 F5.3 --- z [0.03/3.104] Redshift
51- 52 A2 --- Class Classification (1)
54- 61 E8.2 ph/cm2/s F1-100GeV [7.5e-11/9.9e-8] γ-ray photon flux,
1-100GeV
63- 66 F4.2 --- alpha [1.75/3.1] photon spectral index
68- 72 F5.2 [10-7W] logLgamma [43.8/48.6] log, γ-ray luminosity,
1-100GeV, erg/s
74- 78 F5.2 [10-7W] logLBLR [41.7/46.5] log, broad-line region
luminosity, erg/s
80- 92 A13 --- r_logLBLR References for logLBLR (2)
94- 98 F5.2 --- delta [0.35/85.66] Doppler factor, this work
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Note (1): Classification as follows:
CF = confirmed flat-spectrum radio quasars (FSRQs) (273 occurrences)
CB = confirmed BL Lacs (73 occurrences)
UF = uncertain type BCUs classified as FSRQs (2 occurrences)
BU = uncertain type BCUs classified as BL Lacs (2 occurrences)
Note (2): References as follows :
C99 = Cao & Jiang, 1999MNRAS.307..802C 1999MNRAS.307..802C
C12 = Chai+, 2012ApJ...759..114C 2012ApJ...759..114C
L06 = Liu+, 2006ApJ...637..669L 2006ApJ...637..669L
Sb12 = Sbarrato+, 2012MNRAS.421.1764S 2012MNRAS.421.1764S
Sh12 = Shaw+, 2012, J/ApJ/748/49
S11 = Shen+, 2011, J/ApJS/194/45
W04 = Wang+, 2004ApJ...615L...9W 2004ApJ...615L...9W
G14 = Ghisellini+, 2014, J/other/Nat/515.376
TW = broad-line region luminosity calculated in this work
for the 50 new sources
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Name Blazar name
19- 43 A25 --- OName Other name
45- 49 F5.2 --- delta [0.35/85.66]? Doppler factor, this work
51- 52 I2 --- delta-G14 [5/18]? Doppler factor,
Ghisellini+, 2014, J/other/Nat/515.376
54- 58 F5.2 --- delta-L18 [0.23/88.44]? Doppler factor,
Liodakis+, 2018, J/ApJ/866/137
60- 63 F4.1 --- delta-C18 [1.3/94.0]? Doppler factor,
Chen+, 2018, J/ApJS/235/39
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 24-Sep-2021