J/ApJ/922/222 Multiwavelength light curves of PG 1553+113 (Huang+, 2021)
The X-ray outburst of PG 1553+113: a precession effect of two jets in the
supermassive black hole binary system.
Huang S., Yin H., Hu S., Chen Xu, Jiang Y., Alexeeva S., Wang Y.
<Astrophys. J., 922, 222 (2021)>
=2021ApJ...922..222H 2021ApJ...922..222H
ADC_Keywords: BL Lac objects; Gamma rays; Photometry, UBV; Ultraviolet;
X-ray sources; Radio sources; Black holes
Keywords: Supermassive black holes ; Blazars ; X-ray bursts ;
Relativistic jets
Abstract:
Blazar PG 1553+113 is thought to be a host of supermassive black hole
binary system. A 2.2yr quasi-periodicity in the γ-ray light
curve was detected, possibly a result of jet precession. Motivated by
the previous studies based on the γ-ray data, we analyzed the
X-ray light curve and spectra observed during 2012-2020. The 2.2yr
quasi-periodicity might be consistent with the main-flare recurrence
in the X-ray light curve. When a weak rebrightening in the γ-ray
was observed, a corresponding relatively strong brightening in the
X-ray light curve can be identified. The harder- when-brighter
tendency in both X-ray main and weak flares was shown, as well as a
weak softer-when-brighter behavior for the quiescent state. We explore
the possibility that the variability in the X-ray band can be
interpreted with two-jet precession scenario. Using the relation
between jets and accretion disks, we derive the primary black hole
mass ∼3.47x108M☉ and mass of the secondary one
∼1.40x108M☉, and their mass ratio ∼0.41.
Description:
We collected γ-ray data of PG 1553+113 from the Fermi-LAT data
website obtained during 8yr from 2012-2020 January 1. See Section 2.1.
The Swift X-ray Telescope (XRT) is one of the instruments on the Neil
Gehrels Swift observatory with a sensitive broadband detector for
X-ray from 0.3-10keV. The data from 2012-2020 January 1 were retrieved
from the High Energy Astrophysics Science Archive Research Center
website. See Section 2.2.1.
UV/Optical Telescope (UVOT), covering wavelength range 170-600nm,
7 filters (v, b, u, uvw1, uvm2, uvw2 and white), with field of view
17'x17', is one of instruments on the Swift observatory.
See Section 2.2.2.
XMM-Newton is an X-ray observatory, and its main instrument is the
European Photon Imaging Camera, consisting of two MOS detectors and a
pn camera, which operate in the 0.2-12.0keV energy range. Totally,
24 sets of observations of PG 1553+113 obtained from 2001-2020 were
employed. See Section 2.3.
The 40m telescope at the Owens Valley Radio Observatory (OVRO), is
monitoring more than 1800 blazars (Richards+ 2011, J/ApJS/194/29). We
obtain the 15GHz data covering from 2012-2020 January from the public
data archived website.
Objects:
-----------------------------------------------------------------
RA (ICRS) DE Designation(s)
-----------------------------------------------------------------
15 55 43.04 +11 11 24.3 PG 1553+113 = SDSS J155543.03+111124.3
-----------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
fig1.dat 59 2889 Multiwavelength light curves of PG 1553+113
--------------------------------------------------------------------------------
See also:
B/swift : Swift Master Catalog (HEASARC, 2004-)
B/xmm : XMM-Newton Obs. Log (XMM-Newton Science Operation Center, 2012)
J/ApJ/707/L56 : VLBI and bright Fermi/LAT sources (Kovalev, 2009)
J/MNRAS/404/1719 : Combined NVSS-FIRST gal. (CoNFIG) sample II (Gendre+, 2010)
J/A+A/520/A47 : Blazars in the Swift-BAT hard X-ray sky (Maselli+, 2010)
J/ApJ/709/1407 : SED of the Fermi blazars (Li+, 2010)
J/ApJ/715/429 : First Fermi-LAT AGN catalog (1LAC) (Abdo+, 2010)
J/ApJ/716/30 : SED of Fermi bright blazars (Abdo+, 2010)
J/ApJ/722/520 : Gamma-ray light curves of Fermi blazars (Abdo+, 2010)
J/ApJ/741/30 : Radio/γ-ray correlation in AGN (Ackermann+, 2011)
J/ApJ/742/27 : 15GHz and jet properties of MOJAVE blazars (Lister+, 2011)
J/ApJS/194/29 : Observations of blazars at 15GHz (Richards+, 2011)
J/A+A/538/A26 : BL Lac objects beyond z=1.3 (Rau+, 2012)
J/A+A/541/A160 : Planck + X/γ observations of blazars (Giommi+, 2012)
J/ApJ/748/68 : WISE IR colors of gamma-ray blazars (D'Abrusco+, 2012)
J/ApJS/207/16 : BL Lac candidates for TeV observations (Massaro+, 2013)
J/A+A/570/A126 : XShooter spectrum of 4 BL Lacs (Landoni+, 2014)
J/MNRAS/439/690 : Optical/γ-ray variability in blazars (Hovatta+, 2014)
J/MNRAS/442/1693 : Gamma-ray-loud blazars opt. polarization (Pavlidou+, 2014)
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/ApJ/810/14 : Third catalog of LAT-detected AGNs (3LAC) (Ackermann+, 2015)
J/A+A/596/A78 : R-band polarization curves of 48 BL Lacs (Hovatta+, 2016)
J/ApJ/817/111 : HST/COS survey of z<0.9 AGNs. I. (Danforth+, 2016)
J/ApJ/833/77 : gamma-ray bright blazars optical polarization (Itoh+, 2016)
J/MNRAS/467/3172 : HI photoionization rate at z<0.5 for QSOs (Gaikwad+, 2017)
J/A+A/608/A68 : TeV/non-TeV BL Lacs multi-lambda (Fallah Ramazani+, 2017)
J/ApJ/866/33 : The COS CGM compendium. I. Initial results (Lehner+, 2018)
J/A+A/620/A185 : Long-term optical monitoring of TeV Blazars (Nilsson+, 2018)
J/ApJS/234/12 : MOJAVE XV. 15GHz obs. of AGN jets 1996-2016 (Lister+, 2018)
J/ApJS/237/30 : 6-yr light curves of 10 blazars (Meng+, 2018)
J/A+A/626/A60 : F-GAMMA 2.64-43GHz data over 2007-2015 (Angelakis+, 2019)
J/ApJ/871/35 : HST/COS spectra of QSOs with SiIV data (Zheng+, 2019)
J/ApJ/873/132 : ICRF3 radio-loud quasars with Gaia DR2 data (Makarov+, 2019)
J/ApJ/874/43 : MOJAVE. XVII. Parsec-scale AGN jet kinematics (Lister+, 2019)
J/ApJ/880/29 : X-ray polarization predictions in blazars (Liodakis+, 2019)
J/ApJ/884/L31 : Sp. & HST obs. of gal. in 1ES1553+113 field (Johnson+, 2019)
J/PASP/132/K4102 : Beamed & unbeamed emission of gamma-ray blazars (Pei+, 2020)
J/A+A/645/A18 : SVOM-ECLAIRs known X-ray sources catalogue (Dagoneau+, 2021)
J/A+A/645/A137 : BVRI light curves of PG 1553+113 (Agarwal+, 2021)
J/A+A/654/A169 : Radio variability to identify changing jets (Liodakis+, 2021)
Byte-by-byte Description of file: fig1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- Band Observation band (1)
11- 23 F13.7 d MJD [53480.15/59010.5] Modified Julian Date
25- 35 E11.5 --- Flux [5.3e-12/17.6] Flux density
37- 47 E11.5 --- e_Flux [4.4e-13/1.4] Uncertainty in Flux
49- 59 A11 --- x_Flux Flux density units (2)
--------------------------------------------------------------------------------
Note (1): Band as follows:
gamma-ray = Fermi/LAT 100MeV to 300GeV range (216 occurrences)
X-ray = Swift/XRT 0.3 to 10keV range (326 occurrences)
uvw1 = Swift/UVOT uvw1 filter (306 occurrences)
uvw2 = Swift/UVOT uvw2 filter (299 occurrences)
uvm2 = Swift/UVOT uvm2 filter (290 occurrences)
u = Swift/UVOT u filter (290 occurrences)
b = Swift/UVOT b filter (275 occurrences)
v = Swift/UVOT v filter (275 occurrences)
15GHz = Owens Valley Radio Observatory (OVRO) 15GHz (612 occurrences)
Note (2): The flux density units are photons/cm2/s for the gamma-rays,
erg/cm2/s for X-rays, mJy for the Swift/UVOT photometry, and
Jy for the 15GHz radio data.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 30-Mar-2023