J/ApJ/944/157 Fermi jetted AGN with reliable redshift (Chen+, 2023)
Curvature of the spectral energy distribution, compton dominance, and
synchrotron peak frequency in jetted active galactic nuclei.
Chen Y., Gu Q., Fan J., Yu X., Ding N., Xiong D., Guo X.
<Astrophys. J., 944, 157 (2023)>
=2023ApJ...944..157C 2023ApJ...944..157C
ADC_Keywords: Active gal. nuclei; Gamma rays; Radio sources; BL Lac objects;
QSOs; Galaxies, Seyfert; Redshifts; Black holes
Keywords: Blazars ; Radio loud quasars ; BL Lacertae objects ;
Seyfert galaxies ; Active galactic nuclei ; Gamma-rays
Abstract:
We collect a large sample with a reliable redshift detected by the
Fermi satellite after 10yr of data (4FGL-DR2), including blazars,
gamma-ray narrow-line Seyfert 1 galaxies (γNLS1s), and radio
galaxies. The spectral energy distributions of these Fermi sources are
fitted by using a second-degree polynomial, and some important
parameters including spectral curvature, synchrotron peak frequency,
and peak luminosity are obtained. Based on those parameters, we
discuss the Fermi blazar sequence and the particle acceleration
mechanism. Our main results are as follows: (i) By studying the
relationship between the synchrotron peak frequency and the
synchrotron peak frequency luminosity, jet kinetic power, and
gamma-ray luminosity for jetted active galactic nuclei (AGNs), we find
an "L" shape in the Fermi blazar sequence. (ii) There is a significant
anticorrelation between the Compton dominance, the black hole spin,
and the synchrotron peak frequency for jetted AGNs, respectively.
These results support that the γNLS1s and radio galaxies belong
to the Fermi blazar sequence. (iii) On the basis of previous work,
statistical or stochastic acceleration mechanisms can be used to
explain the relationship between the synchrotron peak frequency and
synchrotron curvature. For different subclasses, the correlation
slopes are different, which implies that the Fermi sources of
different subclasses have different acceleration mechanisms. (iv)
Flat-spectrum radio quasars and γNLS1s have a higher median spin
of a black hole than BL Lac objects and radio galaxies.
Description:
We try to collect a large samples of Fermi sources with reliable
redshift, black hole masses, accretion disk luminosities, synchrotron
peak frequencies, and synchrotron peak frequency luminosities. We
consider the sample of Paliya+ (2021, J/ApJS/253/46). We only consider
the sources with 1.4GHz radio flux from the NASA Extragalactic
Database (NED). Finally, we get 504 FSRQs, 277 BL Lac objects, and
17 γNLS1s. Also, we consider radio galaxies with 1.4GHz radio
fluxes from the 4FGL-DR2 catalog and select 38 samples. See Section 2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 94 836 The sample of jetted AGN
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See also:
IX/67 : Incremental Fermi LAT 4th source cat. (4FGL-DR3) (Fermi-LAT col., 2022)
J/A+A/375/739 : Hard X-ray properties of blazars (Donato+, 2001)
J/A+A/445/441 : SED of BL Lacertae objects (Nieppola+, 2006)
J/ApJ/686/859 : Radio sources at 0.327, 1.4, 4.5, 8.5GHz (Birzan+, 2008)
J/A+A/488/867 : Synchrotron peak frequency of 135 AGN (Nieppola+, 2008)
J/ApJ/716/30 : SED of Fermi bright blazars (Abdo+, 2010)
J/ApJ/742/27 : 15GHz and jet properties of MOJAVE blazars (Lister+, 2011)
J/ApJ/740/98 : Synchrotron peak for blazars and radio gal. (Meyer+, 2011)
J/ApJ/810/14 : Third catalog of LAT-detected AGNs (3LAC) (Ackermann+, 2015)
J/MNRAS/448/1060 : Fermi/LAT broad emission line blazars (Ghisellini+, 2015)
J/ApJS/247/33 : Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)
J/MNRAS/495/981 : Jet efficiencies & black hole spins in QSOs (Soares+, 2020)
J/MNRAS/505/4726 : Study of relativistic jets in blazar objects (Keenan+, 2021)
J/ApJS/253/46 : Optical spectroscopy of Fermi blazars (Paliya+, 2021)
J/A+A/658/A12 : Origins of radio emission in NLS1s (Jarvela+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- 4FGL Source identifier (JHHMM.m+DDMM)
15- 19 A5 --- Type Source type (1)
21- 26 F6.4 --- z [0.004/4.4] Spectroscopic redshift
28- 33 F6.3 [Msun] logMBH [6.34/10.2] Log black hole mass
35- 39 F5.2 [10-7W] logLd [40.46/47.42] Log disk luminosity; erg/s
41- 48 F8.5 [10-7W] logLg [41.67/51.4] Log γ-ray luminosity; erg/s
50- 58 F9.5 Jy F1.4GHz [0.0036/226] The 1.4GHz flux density
60- 64 F5.2 [10-7W] logPj [43.25/46.55] Log jet kinetic power; erg/s
66- 70 F5.2 [Hz] lognu [11.39/19.4] Log synchrotron peak frequency,
logνpksy
72- 81 F10.6 --- CD [0.019/117.5] Compton dominance
83- 88 F6.3 --- bsy [-1.95/0.4] Curvature, bsy
90- 94 F5.2 [10-7W] logLpk [42.3/50.2] Log synchrotron peak frequency
luminosity, Lpksy; erg/s
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Note (1): Type as follows:
FSRQ = flat-spectrum radio quasar (504 occurrences)
BLL = BL Lac object (277 occurrences)
RDG = radio galaxy (38 occurrences)
NLSY1 = narrow-line Seyfert 1 galaxy (17 occurrences)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 28-Jan-2025