The Gamma-ray Activity of the high-z Quasar 0836+710 The Gamma-ray Activity of the high-z Quasar 0836+710

April 21, 2023 Jets Meeting, Granada

Svetlana Jorstad Boston Univ. USA, St.Petersburg Univ. Russia

Co-Authors Co-Authors

Boston University group: Alan Marscher, Manasvita Joshi, Karen Willamson, Nick MacDonaldSt.Petersburg University group: Valeri Larionov, Vladimir Hagen-Thorn Daria Morozova, Ivan TroitskyInstituto de Astrof´ısica de Andaluc´ıa group: José-Luis Gómez, Iván Agudo Carolina Casadio, Sol MolinaMark Gurwell , CfA

Metsähovi Radio Obs. Group: Anne Lähteenmäki, Merja Tornikoski

Max-Plank-Institut für Radioastronomie group: Lars Fuhrman, Thomas Krichbaum, Jeff Hodgson, E. Angelakis, J.A. Zensus

Cahill Center for Astronomy & Astrophysics: Talvikki Hovatta in behalf of the OVRO collaboration

April 21, 2023 Jets Meeting, Granada

VLBA

PERKINS

SMA

LT

AZT-8Calar Alto

April 21, 2023 Jets Meeting, Granada

Telescopes Telescopes

St.Petersburg, Russia

Mauna Kea, Hawaii

Canary Island, Spain

Fermi LAT Swift XRT & UVOT

Crimea, UkraineAlmería, Spain

RXTE

Flagstaff, AZ USA

Effelsberg, Germany Metsähovi Obs., Finland OVRO, CA USA

LX-200

SUZAKU

Outline Outline

April 21, 2023 Jets Meeting, Granada

I. Multi-Frequency behavior of the quasar 0836+71 (4C +71.07),

z=2.1781. Gamma-ray Outburst2. X-ray variability3. Optical emission propertiesII. Parsec Scale Jet Evolution1. Jet Kinematics2. Optical Polarization andPolarization in the Jet3. Radio light curvesIII. SEDsVI. Discussion & Conclusion

November, 2010 1 November, 2011

The Gamma-Ray Outburst The Gamma-Ray Outburst

April 21, 2023 Jets Meeting, Granada

Tγstart ~5626 (5 March 2011)

Sγmax =(28.9 ± 0.38)×10-7 ph/cm2/s

S2FLG =(1.8 ± 0.7)×10-8 ph/cm2/sTγ

max =5867.047 (1 November, 2011)

τγmin =10.6hr (doubling time)

f=3.78 in 18.1 hr Lγ =(1.09 ± 0.16)×1049 ergs/s DL =17.875 Gpc

X-Ray Variability X-Ray Variability

April 21, 2023 Jets Meeting, Granada

NH = 2.9×1020 cm-3 (Kalberla et. 2005)Sx

max = (3.43 ± 0.27)×10-11 ergs/cm2/sTx

max =5923.4855 (Tγmax =5867.0473)

τxmin =13hr f=1.4 :

5876.1276 (2.08 ± 0.22)×10-11 ergs/cm2/s 5876.6658 (1.49 ± 0.10)×10-11 ergs/cm2/sLx =(1.23 ± 0.10)×1048 ergs/s

Optical Properties IOptical Properties I

April 21, 2023 Jets Meeting, Granada

Kaspi et. al 2007:SCIV = (2.36 ± 0.57)×10-14 ergs/cm2/s FWHMCIV ~ 9700 km/sTime Lag: 595 (+85,-110)days 188 (+27,-37)daysMBH ~ 2.6 ×109 Msun

λLλ (1350Å) = (1.12 ± 0.16)×1047 ergs/s Ldisk ~ 3.6 ×1047 ergs/sLbol /LEdd ~ 0.9From CIV FWHM and UV luminosityVestergaard & Peterson (2006)MBH ~ 1.8 ×1010 Msun

Cross-correlation function between

the continuum and the emission lines CIV and CIII]

Optical Properties IIOptical Properties II

April 21, 2023 Jets Meeting, Granada

SXmax = 1.239 ± 0.009 mJy

TXmax =5884.565 (Tγ

max =5867.0473)

τXmin =1.56 day f=1.4 :

RJD: 5884.565 - 5886.156Method of separation thermal andsynchrotron components: Hagen-Thorn et al. #25

Parsec Scale Jet of the Quasar 0836+714Parsec Scale Jet of the Quasar 0836+714

April 21, 2023 Jets Meeting, Granada

2 cm

7 mm

3 mm

1 mas = 8.39pc

K11

Parsec Scale Jet KinematicsParsec Scale Jet Kinematics

April 21, 2023 Jets Meeting, Granada

K11: μ = 0.234±0.014mas/yrTo = 2011. 27±0.02 βapp = 19.7±1.2c Γ ~19.8 (Γslow ~12)

δ ~21.3Θo ~2.7o

τvar ~ 0.7yra ~ 0.08mas

April 21, 2023 Jets Meeting, Granada

Optical Polarization & Polarization in the Inner Jet

Optical Polarization & Polarization in the Inner Jet

Larionov et al. 2013 ApJ

43GHz-15GHz Core Shift43GHz-15GHz Core Shift

April 21, 2023 Jets Meeting, Granada

Pushkarev et al. 2012: a distance from the BH to the 15 GHz Core ~42.5pc

a shift between the 15 and 43 GHz Cores ~ 0.16mas

2.57mas2.73±0.04mas

Spectral Energy DistributionSpectral Energy Distribution

April 21, 2023 Jets Meeting, Granada

Z=2.178Lγ =(1.09 ± 0.16)×1049 ergs/s Ldisk ~ 3.6 ×1047 ergs/s LX =(1.23 ± 0.10)×1048 ergs/s LSSC ~ LX LSYN ~ 5.4 ×1047 ergs/s τ var,,obs ~ 0.5 day Γ ~19.8 δ ~21.3Chatterjee, Nalewajko, & Myers 2013

ApJ, submit:r – distance of γ-ray outburst with respect to BHθ – opening angle of the jetΓ = f1 (r,, θ) Γ = f2 (r, LSSC, q)q-Compton dominance parameterq=Lγ /LSYN ; ξ ~0.3

r = 2Γ4 (δ/Γ)2 [1/3 (LSSC /LSYN )(ξLdisk/Lγ )]1/2 [cτ var,,obs /(1+z)]=15.8 pc

Conclusions

April 21, 2023 Jets Meeting, Granada

April 21, 2023 Jets Meeting, Granada

SAVE the VLBA!!!!