J/ApJ/940/77 BASS. XXXIII. Blazars in the 14-195keV range (Marcotulli+, 2022)
BASS.
XXXIII. Swift-BAT blazars and their jets through cosmic time.
Marcotulli L., Ajello M., Urry C.M., Paliya V.S., Koss M., Oh K.,
Madejski G., Ueda Y., Balokovic M., Trakhtenbrot B., Ricci F., Ricci C.,
Stern D., Harrison F., Powell M.C., The BASS Collaboration
<Astrophys. J., 940, 77 (2022)>
=2022ApJ...940...77M 2022ApJ...940...77M
ADC_Keywords: Active gal. nuclei; X-ray sources; Redshifts
Keywords: Active galactic nuclei ; Blazars ; Cosmological evolution ;
X-ray active galactic nuclei ; Supermassive black holes ;
Quasars ; Relativistic jets
Abstract:
We derive the most up-to-date Swift-Burst Alert Telescope (BAT) blazar
luminosity function in the 14-195keV range, making use of a clean
sample of 118 blazars detected in the BAT 105 month survey catalog,
with newly obtained redshifts from the BAT Active Galatic Nucleus
Spectroscopic Survey. We determine the best-fit X-ray luminosity
function for the whole blazar population, as well as for flat-spectrum
radio quasars (FSRQs) alone. The main results are: (1) at any
redshift, BAT detects the most luminous blazars, above any possible
break in their luminosity distribution, which means we cannot
differentiate between density and luminosity evolution; (2) the whole
blazar population, dominated by FSRQs, evolves positively up to
redshift z∼4.3, confirming earlier results and implying lower number
densities of blazars at higher redshifts than previously estimated.
The contribution of this source class to the cosmic X-ray background
at 14-195keV can range from 5%-18%, while possibly accounting for 100%
of the MeV background. We also derived the average 14keV-10GeV
spectral energy distribution for BAT blazars, which allows us to
predict the number counts of sources in the MeV range, as well as the
expected number of high-energy (>100TeV) neutrinos. A mission like
COSI will detect 40 MeV blazars, of which two may have coincident
neutrino detections. Finally, taking into account beaming selection
effects, the distribution and properties of the parent population of
these extragalactic jets are derived. We find that the distribution of
viewing angles is quite narrow, with most sources aligned within
<5° of the line of sight. Moreover, the average Lorentz factor,
<Γ≥8-12, is lower than previously suggested for these powerful
sources.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 108 118 Clean sample used in the analysis
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See also:
B/swift : Swift Master Catalog (HEASARC, 2004-)
VII/274 : The Roma BZCAT - 5th edition (Massaro+, 2015)
J/ApJS/171/61 : Survey of Flat-Spectrum Radio Sources (Healey+, 2007)
J/A+A/487/119 : AGN in XMM-Newton Hard Bright Survey (Della Ceca+, 2008)
J/ApJS/175/97 : CGRaBS: survey of γ-ray blazar cand. (Healey+, 2008)
J/ApJ/699/603 : Evolution of Swift/BAT blazars (Ajello+, 2009)
J/AJ/138/1874 : MOJAVE. VI. Kinematics of blazar jets (Lister+, 2009)
J/ApJ/722/520 : Gamma-ray light curves of Fermi blazars (Abdo+, 2010)
J/ApJ/749/21 : AGNs detected by 60 month Swift/BAT survey (Ajello+, 2012)
J/ApJ/744/84 : Combined sample of radio-loud AGNs at 408MHz (Yuan+, 2012)
J/ApJS/207/19 : Hard X-ray survey from Swift-BAT 6yrs (Baumgartner+, 2013)
J/ApJ/780/73 : Redshifts of BL Lac objects from Fermi (Ajello+, 2014)
J/ApJS/215/14 : WISE γ-ray blazar radio sources (D'Abrusco+, 2014)
J/other/Nat/515.376 : Power of relativistic jets in blazars (Ghisellini+, 2014)
J/ApJ/799/86 : Isotropic diffuse gamma-ray emission (Ackermann+, 2015)
J/MNRAS/460/3202 : AGN with relativistic jets (Olguin-Iglesias+, 2016)
J/ApJ/850/74 : Swift/BAT AGN Spectroscopic Survey. I. (Koss+, 2017)
J/ApJ/851/33 : Multi-wavelength analysis of CGRaBS blazars (Paliya+, 2017)
J/ApJS/235/4 : 105-month Swift-BAT all-sky hard X-ray survey (Oh+, 2018)
J/ApJ/874/43 : MOJAVE. XVII. Jet kinematics of AGNs (Lister+, 2019)
J/ApJ/881/154 : BAT AGN spectroscopic survey. XVI. Blazars (Paliya+, 2019)
J/ApJS/247/33 : Fermi LAT fourth source catalog (4FGL) (Abdollahi+, 2020)
J/ApJ/897/177 : 142 high-redshift blazars at the cosmic dawn (Paliya+, 2020)
J/ApJS/253/46 : Optical spectroscopy of Fermi blazars (Paliya+, 2021)
J/ApJS/261/2 : BASS. XXII. Swift/BAT AGN Sp. Survey DR2 cat. (Koss+, 2022)
J/ApJS/261/4 : BASS. XXIV. DR2 sp. line measurements of AGNs (Oh+, 2022)
J/ApJS/261/5 : BASS. XXV. DR2 AGNs BH masses (Mejia-Restrepo+, 2022)
J/ApJS/261/6 : BASS. XXVI. DR2 stellar velocity dispersions (Koss+, 2022)
J/ApJS/261/7 : BASS. XXVIII. NIR DR2 sp. of Swift AGNs (den Brok+, 2022)
J/ApJS/261/8 : BASS. XXIX. NIR view of broad-line regions (Ricci+, 2022)
J/ApJS/269/24 : BASS. XXXIV. ALMA obs. of Swift/BAT AGNs (Kawamuro+, 2023)
http://www.bass-survey.com/ : The BAT AGN Spectroscopic Survey (BASS) homepage
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- BAT [8/1620] BAT number as in BAT 105
(Oh+ 2018, J/ApJS/235/4)
6- 18 A13 --- SWIFT SWIFT identifier (JHHMM.m+DDMM)
20- 25 F6.2 deg RAdeg BAT right ascension (J2000)
27- 32 F6.2 deg DEdeg BAT declination (J2000)
34- 57 A24 --- Assoc Updated associated counterparts from
the BASS spectroscopic campaign
59- 64 F6.2 --- S/N [4.9/198] Signal-to-noise ratio,
σ, of BAT detection
66- 68 A3 --- Type Updated source type from the BASS DR2
spectroscopic classification
70- 75 F6.2 10-15W/m2 F14-195keV [6/422] Source 14-195keV flux as listed
in the BAT 105 catalog
77- 80 F4.2 10-15W/m2 e_F14-195keV [1/10] Lower 90% uncertainty on
F14-195keV
82- 86 F5.2 10-15W/m2 E_F14-195keV [1/13] Upper 90% uncertainty on
F14-195keV
88- 91 F4.2 --- Gamma [0.5/3.3] BAT spectral index,
Γ14-195keV (1)
93- 96 F4.2 --- e_Gamma [0.02/1.3]? Lower uncertainty on Gamma
98- 101 F4.2 --- E_Gamma [0.02/6] Upper uncertainty on Gamma
103- 108 F6.4 --- z [0.03/4.7] Redshift as in BASS DR2
(Papers XXI-XXX)
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Note (1): The BAT spectral index, computed from a power-law fit to the
eight-band BAT data and reported the BAT 105 catalog.
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History:
From electronic version of the journal
References:
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(End) Emmanuelle Perret [CDS] 28-Feb-2024