2020MNRAS.492.3829L

Query : 2020MNRAS.492.3829L

2020MNRAS.492.3829L - Mon. Not. R. Astron. Soc., 492, 3829-3848 (2020/March-1)

Multiwavelength behaviour of the blazar 3C 279: decade-long study from γ-ray to radio.

LARIONOV V.M., JORSTAD S.G., MARSCHER A.P., VILLATA M., RAITERI C.M., SMITH P.S., AGUDO I., SAVCHENKO S.S., MOROZOVA D.A., ACOSTA-PULIDO J.A., ALLER M.F., ALLER H.D., ANDREEVA T.S., ARKHAROV A.A., BACHEV R., BONNOLI G., BORMAN G.A., BOZHILOV V., CALCIDESE P., CARNERERO M.I., CAROSATI D., CASADIO C., CHEN W.-P., DAMLJANOVIC G., DEMENTYEV A.V., DI PAOLA A., FRASCA A., FUENTES A., GOMEZ J.L., GONZALEZ-MORALES P., GIUNTA A., GRISHINA T.S., GURWELL M.A., HAGEN-THORN V.A., HOVATTA T., IBRYAMOV S., JOSHI M., KIEHLMANN S., KIM J.-Y., KIMERIDZE G.N., KOPATSKAYA E.N., KOVALEV Y.A., KOVALEV Y.Y., KURTANIDZE O.M., KURTANIDZE S.O., LAHTEENMAKI A., LAZARO C., LARIONOVA L.V., LARIONOVA E.G., LETO G., MARCHINI A., MATSUMOTO K., MIHOV B., MINEV M., MINGALIEV M.G., MIRZAQULOV D., MUNOZ DIMITROVA R.V., MYSERLIS I., NIKIFOROVA A.A., NIKOLASHVILI M.G., NIZHELSKY N.A., OVCHAROV E., PRESSBURGER L.D., RAKHIMOV I.A., RIGHINI S., RIZZI N., SADAKANE K., SADUN A.C., SAMAL M.R., SANCHEZ R.Z., SEMKOV E., SERGEEV S.G., SIGUA L.A., SLAVCHEVA-MIHOVA L., SOLA P., SOTNIKOVA Y.V., STRIGACHEV A., THUM C., TRAIANOU E., TROITSKAYA Y.V., TROITSKY I.S., TSYBULEV P.G., VASILYEV A.A., VINCE O., WEAVER Z.R., WILLIAMSON K.E. and ZHEKANIS G.V.

Abstract (from CDS):

We report the results of decade-long (2008-2018) γ-ray to 1 GHz radio monitoring of the blazar 3C 279, including GASP/WEBT, Fermi and Swift data, as well as polarimetric and spectroscopic data. The X-ray and γ-ray light curves correlate well, with no delay >= 3 h, implying general cospatiality of the emission regions. The γ-ray-optical flux-flux relation changes with activity state, ranging from a linear to a more complex dependence. The behaviour of the Stokes parameters at optical and radio wavelengths, including 43 GHz Very Long Baseline Array images, supports either a predominantly helical magnetic field or motion of the radiating plasma along a spiral path. Apparent speeds of emission knots range from 10 to 37c, with the highest values requiring bulk Lorentz factors close to those needed to explain γ-ray variability on very short time-scales. The Mg II emission line flux in the `blue' and `red' wings correlates with the optical synchrotron continuum flux density, possibly providing a variable source of seed photons for inverse Compton scattering. In the radio bands, we find progressive delays of the most prominent light-curve maxima with decreasing frequency, as expected from the frequency dependence of the τ = 1 surface of synchrotron self-absorption. The global maximum in the 86 GHz light curve becomes less prominent at lower frequencies, while a local maximum, appearing in 2014, strengthens toward decreasing frequencies, becoming pronounced at ∼5 GHz. These tendencies suggest different Doppler boosting of stratified radio-emitting zones in the jet.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: observational - techniques: photometric - techniques: polarimetric - techniques: spectroscopic - galaxies: active - quasars: individual: 3C 279

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
2 MCG+01-12-009 Bla 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 2099 2
3 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 15.50 14.27   ~ 1388 1
4 7C 082754.29+242103.00 Bla 08 30 52.08619250 +24 10 59.8202919   17.62 17.26 16.30   ~ 563 1
5 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 771 1
6 7C 122223.5+213929 Bla 12 24 54.4583146056 +21 22 46.385507388   17.56 17.50 18.2   ~ 770 2
7 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
8 HD 112587 * 12 57 51.2872213032 -05 18 36.331488936   10.15 9.96     A1V 15 0
9 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
10 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
11 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
12 4C 38.41 Bla 16 35 15.49297809 +38 08 04.5005995   18.14 17.97 17.25   ~ 906 1
13 NAME BL Lac BLL 22 02 43.2913536816 +42 16 39.979416792   15.66 14.72     ~ 2397 1
14 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2
15 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
16 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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