AGILE, <i>Fermi</i>, <i>Swift</i>, and GASP/WEBT multi-wavelength observations of the high-redshift blazar 4C +71.07 in outburst
S. VercelloneINAF, Osservatorio Astronomico di Brera, Via Emilio Bianchi 46, 23807 Merate, LC, ItalyP. RomanoINAF, Osservatorio Astronomico di Brera, Via Emilio Bianchi 46, 23807 Merate, LC, ItalyG. PianoINAF, Istituto di Astrofisica e Planetologia Spaziale, Via Fosso del Cavaliere 100, 00133 Roma, ItalyV. VittoriniINAF, Istituto di Astrofisica e Planetologia Spaziale, Via Fosso del Cavaliere 100, 00133 Roma, ItalyI. DonnarummaP. Munar-AdroverINAF, Istituto di Astrofisica e Planetologia Spaziale, Via Fosso del Cavaliere 100, 00133 Roma, ItalyC. M. RaiteriINAF, Osservatorio Astronomico di Torino, Via Osservatorio 20, 10025 Pino Torinese, ItalyM. VillataINAF, Osservatorio Astronomico di Torino, Via Osservatorio 20, 10025 Pino Torinese, ItalyF. VerrecchiaASI Space Science Data Center, Via del Politecnico, 00133 Roma, ItalyF. LucarelliASI Space Science Data Center, Via del Politecnico, 00133 Roma, ItalyC. PittoriASI Space Science Data Center, Via del Politecnico, 00133 Roma, ItalyA. BulgarelliINAF, Osservatorio di Astrofisica e Scienza dello Spazio, Via Piero Gobetti 93/3, 40129 Bologna, ItalyV. FiorettiINAF, Osservatorio di Astrofisica e Scienza dello Spazio, Via Piero Gobetti 93/3, 40129 Bologna, ItalyM. TavaniDip. di Fisica, Univ. di Roma “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Roma, ItalyJ. A. Acosta‐PulidoDepartamento de Astrofísica, Universidad de La Laguna, 38206 La Laguna, Tenerife, SpainI. AgudoInstituto de Astrofísica de Andalucía (CSIC), Apartado 3004, 18080 Granada, SpainA. A. ArkharovPulkovo Observatory, St.-Petersburg, RussiaU. BachMax-Planck-Insitut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, GermanyR. BachevInstitute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72, Tsarigradsko Shose Blvd., 1784 Sofia, BulgariaГ. А. БорманCrimean Astrophysical Observatory RAS, P/O Nauchny 298409, RussiaM. S. ButuzovaCrimean Astrophysical Observatory RAS, P/O Nauchny 298409, RussiaM. I. CarnereroINAF, Osservatorio Astronomico di Torino, Via Osservatorio 20, 10025 Pino Torinese, ItalyC. CasadioMax-Planck-Insitut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, GermanyG. DamljanovićAstronomical Observatory, Volgina 7, 11060 Belgrade, SerbiaF. D’AmmandoDip. di Fisica e Astronomia, Università di Bologna, Viale Berti Pichat 6/2, 40127 Bologna, ItalyA. Di PaolaINAF, Osservatorio Astronomico di Roma, Via Frascati 33, 00078 Monte Porzio Catone, ItalyVictor DoroshenkoSternberg Astronomical Institute, M.V. Lomonosov Moscow State University, Universitetskij prosp.13, Moscow 119991, RussiaН. В. ЕфимоваPulkovo Observatory, St.-Petersburg, RussiaSh. A. EhgamberdievUlugh Beg Astronomical Institute, Maidanak Observatory, UzbekistanM. GirolettiINAF, Istituto di Radioastronomia, Via Piero Gobetti 93/2, 40129 Bologna, ItalyJosé L. GómezInstituto de Astrofísica de Andalucía (CSIC), Apartado 3004, 18080 Granada, SpainT. S. GrishinaAstron. Inst., St.-Petersburg State Univ., RussiaE. JärveläAalto University Department of Electronics and Nanoengineering, PO Box 13000, 00076 Aalto, FinlandS. A. KlimanovPulkovo Observatory, St.-Petersburg, RussiaE. N. KopatskayaAstron. Inst., St.-Petersburg State Univ., RussiaO. M. KurtanidzeAbastumani Observatory, Mt. Kanobili, 0301 Abastumani, GeorgiaA. LähteenmäkiAalto University Department of Electronics and Nanoengineering, PO Box 13000, 00076 Aalto, FinlandV. M. LarionovAstron. Inst., St.-Petersburg State Univ., RussiaL. V. LarionovaAstron. Inst., St.-Petersburg State Univ., RussiaB. MihovInstitute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72, Tsarigradsko Shose Blvd., 1784 Sofia, BulgariaD. O. MirzaqulovUlugh Beg Astronomical Institute, Maidanak Observatory, UzbekistanS. N. MolinaInstituto de Astrofísica de Andalucía (CSIC), Apartado 3004, 18080 Granada, SpainD. A. MorozovaAstron. Inst., St.-Petersburg State Univ., RussiaS. V. NazarovCrimean Astrophysical Observatory RAS, P/O Nauchny 298409, RussiaM. OrientiINAF, Istituto di Radioastronomia, Via Piero Gobetti 93/2, 40129 Bologna, ItalyS. RighiniINAF, Istituto di Radioastronomia, Via Piero Gobetti 93/2, 40129 Bologna, ItalyС. С. СавченкоAstron. Inst., St.-Petersburg State Univ., RussiaE. SemkovInstitute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72, Tsarigradsko Shose Blvd., 1784 Sofia, BulgariaL. Slavcheva‐MihovaInstitute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72, Tsarigradsko Shose Blvd., 1784 Sofia, BulgariaA. StrigachevInstitute of Astronomy and National Astronomical Observatory, Bulgarian Academy of Sciences, 72, Tsarigradsko Shose Blvd., 1784 Sofia, BulgariaM. TornikoskiAalto University Metsähovi Radio Observatory, Metsähovintie 114, 02540 Kylmälä, FinlandYu. V. TroitskayaAstron. Inst., St.-Petersburg State Univ., RussiaO. VinceAstronomical Observatory, Volgina 7, 11060 Belgrade, SerbiaP. W. CattaneoINFN, Sezione di Pavia, Via Agostino Bassi, 6, 27100 Pavia, ItalyS. ColafrancescoSchool of Physics, University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, 2000 Johannesburg, South AfricaF. LongoDipartimento di Fisica, Università degli Studi di Trieste, Via Valerio 2, 34127 Trieste, ItalyA. MorselliINFN, Sezione di Roma Tor Vergata, Via della Ricerca Scientifica 1, 00133 Roma, ItalyF. PaolettiEast Windsor RSD, 25a Leshin Lane, Hightstown, NJ 08520, USAN. ParmiggianiINAF, Osservatorio di Astrofisica e Scienza dello Spazio, Via Piero Gobetti 93/3, 40129 Bologna, Italy
ABI
Аннотация
Context. The flat-spectrum radio quasar 4C +71.07 is a high-redshift ( z = 2.172), γ -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 γ -ray satellite during the period from the end of October to mid-November 2015, when it reached a γ -ray flux of the order of F ( E > 100 MeV)=(1.2 ± 0.3)×10 −6 photons cm −2 s −1 and F ( E > 100 MeV)=(3.1 ± 0.6)×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 γ -ray energy bands obtained by the GASP-WEBT Consortium and the Swift , AGILE, and Fermi satellites. Results. The spectral energy distribution of the second γ -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 × 10 47 erg s −1 . Conclusions. During the most prominent γ -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 γ -ray satellites such as e-ASTROGAM.
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Показатели — AkademScholar · Скоро