AGILE, Fermi, Swift, and GASP/WEBT multi-wavelength observations of the high-redshift blazar 4C +71.07 in outburst
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2019-01-11
Department
Osservatorio Astronomico di Brera
Osservatorio Astronomico Roma
ASI Science Data Center
Autonomous University of Barcelona
Osservatorio Astronomico di Torino
Istituto Nazionale di Astrofisica (INAF)
Università di Roma Tor Vergata
Instituto de Astrofísica de Canarias
CSIC
RAS - Pulkovo Astronomical Observatory
Max-Planck-Institut für Radioastronomie
Bulgarian Academy of Sciences
Crimean Astrophysical Observatory
University of Belgrade
Universita di Bologna
Lomonosov Moscow State University
Academy of Sciences of the Republic of Uzbekistan
St. Petersburg State University
Metsähovi Radio Observatory
Georgian National Academy of Sciences
Istituto Nazionale di Fisica Nucleare
University of the Witwatersrand
Università Degli Studi di Trieste
Sapienza University of Rome
Department of Electronics and Nanoengineering
Osservatorio Astronomico Roma
ASI Science Data Center
Autonomous University of Barcelona
Osservatorio Astronomico di Torino
Istituto Nazionale di Astrofisica (INAF)
Università di Roma Tor Vergata
Instituto de Astrofísica de Canarias
CSIC
RAS - Pulkovo Astronomical Observatory
Max-Planck-Institut für Radioastronomie
Bulgarian Academy of Sciences
Crimean Astrophysical Observatory
University of Belgrade
Universita di Bologna
Lomonosov Moscow State University
Academy of Sciences of the Republic of Uzbekistan
St. Petersburg State University
Metsähovi Radio Observatory
Georgian National Academy of Sciences
Istituto Nazionale di Fisica Nucleare
University of the Witwatersrand
Università Degli Studi di Trieste
Sapienza University of Rome
Department of Electronics and Nanoengineering
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
Series
Astronomy and Astrophysics, Volume 621
Abstract
Context. The flat-spectrum radio quasar 4C +71.07 is a high-redshift (z = 2.172), gamma-loud blazar whose optical emission is dominated by thermal radiation from the accretion disc. Aims. 4C +71.07 has been detected in outburst twice by the AGILE gamma-ray satellite during the period from the end of October to mid-November 2015, when it reached a gamma-ray flux of the order of F(E > 100 MeV) = (1.2 +/- 0.3) x 10(-6) photons cm (2) s(-1) and F(E > 100 MeV) = (3.1 +/- 0.6) x 10(-6) photons cm(-2) s(-1), respectively, allowing us to investigate the properties of the jet and the emission region. Methods. We investigated its spectral energy distribution by means of almost-simultaneous observations covering the cm, mm, near-infrared, optical, ultraviolet, X-ray, and gamma-ray energy bands obtained by the GASP-WEBT Consortium and the Swift, AGILE, and Fermi satellites. Results. The spectral energy distribution of the second gamma-ray flare (whose energy coverage is more dense) can be modelled by means of a one-zone leptonic model, yielding a total jet power of about 4 x 10(47) erg s(-1). Conclusions. During the most prominent gamma-ray flaring period our model is consistent with a dissipation region within the broad-line region. Moreover, this class of high-redshift, flat-spectrum radio quasars with high-mass black holes might be good targets for future gamma-ray satellites such as e-ASTROGAM.Description
Keywords
Acceleration of particles, Gamma rays: Galaxies, Quasars: Individual: 4C +71.07, Quasars: Supermassive black holes, Radiation mechanisms: non-thermal, Relativistic processes
Citation
Vercellone , S , Romano , P , Piano , G , Vittorini , V , Donnarumma , I , Munar-Adrover , P , Raiteri , C M , Villata , M , Verrecchia , F , Lucarelli , F , Pittori , C , Bulgarelli , A , Fioretti , V , Tavani , M , Acosta-Pulido , J A , Agudo , I , Arkharov , A A , Bach , U , Bachev , R , Borman , G A , Butuzova , M S , Carnerero , M I , Casadio , C , Damljanovic , G , D'Ammando , F , Di Paola , A , Doroshenko , V T , Efimova , N V , Ehgamberdiev , S A , Giroletti , M , Gómez , J L , Grishina , T S , Järvelä , E , Klimanov , S A , Kopatskaya , E N , Kurtanidze , O M , Lähteenmäki , A , Larionov , V M , Larionova , L V , Mihov , B , Mirzaqulov , D O , Molina , S N , Morozova , D A , Nazarov , S V , Orienti , M , Righini , S , Savchenko , S S , Semkov , E , Slavcheva-Mihova , L , Strigachev , A , Tornikoski , M , Troitskaya , Y V , Vince , O , Cattaneo , P W , Colafrancesco , S , Longo , F , Morselli , A , Paoletti , F & Parmiggiani , N 2019 , ' AGILE, Fermi, Swift, and GASP/WEBT multi-wavelength observationsof the high-redshift blazar 4C +71.07 in outburst ' , Astronomy and Astrophysics , vol. 621 , 82 . https://doi.org/10.1051/0004-6361/201732532