The beamed jet and quasar core of the distant blazar 4C 71.07

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal
View/Open full text file from the Research portal
Date
2019-10
Major/Subject
Mcode
Degree programme
Language
en
Pages
13
1837-1849
Series
Monthly Notices of the Royal Astronomical Society, Volume 489, issue 2
Abstract
The object 4C 71.07 is a high-redshift blazar whose spectral energy distribution shows a prominent big blue bump and a strong Compton dominance. We present the results of a 2-yr multiwavelength campaign led by the Whole Earth Blazar Telescope (WEBT) to study both the quasar core and the beamed jet of this source. The WEBT data are complemented by ultraviolet and X-ray data from Swift, and by.-ray data by Fermi. The big blue bump is modelled by using optical and near-infrared mean spectra obtained during the campaign, together with optical and ultraviolet quasar templates. We give prescriptions to correct the source photometry in the various bands for the thermal contribution, in order to derive the non-thermal jet flux. The role of the intergalactic medium absorption is analysed in both the ultraviolet and X-ray bands. We provide opacity values to deabsorb ultraviolet data, and derive a best-guess value for the hydrogen column density of N-H(best) = 6.3 x 10(20) cm(-2) through the analysis of X-ray spectra. We estimate the disc and jet bolometric luminosities, accretion rate, and black hole mass. Light curves do not show persistent correlations among flux changes at different frequencies. We study the polarimetric behaviour and find no correlation between polarization degree and flux, even when correcting for the dilution effect of the big blue bump. Similarly, wide rotations of the electric vector polarization angle do not seem to be connected with the source activity.
Description
Keywords
galaxies: active, galaxies: jets, quasars: individual: 4C 71.07, ACTIVE GALACTIC NUCLEI, COMPLETE SAMPLE, WEBT CAMPAIGN, RADIO-SOURCES, BLACK-HOLES, SPECTRA, VARIABILITY, ABSORPTION, LUMINOSITY, ROTATIONS
Other note
Citation
Raiteri, C M, Villata, M, Carnerero, M, Acosta-Pulido, J A, Mirzaqulov, D O, Larionov, V M, Romano, P, Vercellone, S, Agudo, I, Arkharov, A A, Bach, U, Bachev, R, Baitieri, S, Borman, G A, Boschin, W, Bozhilov, V, Butuzova, M S, Calcidese, P, Carosati, D, Casadio, C, Chen, W-P, Damljanovic, G, Di Paola, A, Doroshenko, V T, Efimova, N, Ehgamberdiev, S A, Giroletti, M, Gomez, J L, Grishina, T S, Ibryamov, S, Jermak, H, Jorstad, S G, Kimeridze, G N, Klimanov, S A, Kopatskaya, E N, Kurtanidze, O M, Kurtanidze, S O, Lahteenmaki, A, Larionova, E G, Marscher, A P, Mihov, B, Minev, M, Molina, S N, Moody, J W, Morozova, D A, Nazarov, S, Nikiforova, A A, Nikolashvili, M G, Ovcharov, E, Peneva, S, Righini, S, Rizzi, N, Sadun, A C, Samal, M R, Savchenko, S S, Semkov, E, Sigua, L A, Slavcheva-Mihova, L, Steele, I A, Strigachev, A, Tornikoski, M, Troitskaya, Y, Troitsky, I S & Vince, O 2019, ' The beamed jet and quasar core of the distant blazar 4C 71.07 ', Monthly Notices of the Royal Astronomical Society, vol. 489, no. 2, pp. 1837-1849 . https://doi.org/10.1093/mnras/stz2264