AGILE, Fermi, Swift, and GASP/WEBT multi-wavelength observations of the high-redshift blazar 4C +71.07 in outburst

Mirzaqulov D.; Bachev R.; Strigachev A.; Savchenko S.; Agudo I.; Lähteenmäki A.; Grishina T.; Giroletti M.; Arkharov A.; Colafrancesco S.; Munar-Adrover P.; Di Paola A.; Butuzova M.; Kopatskaya E.; Fioretti V.; Orienti M.; Piano G.; Parmiggiani N.; Casadio C.; Tavani M.; Romano P.; Morozova D.; Klimanov S.; Paoletti F.; Vince O.; Cattaneo P.; Troitskaya Y.; Kurtanidze O.; Pittori C.; Semkov E.; Efimova N.; Damljanovic G.; Vercellone S.; Carnerero M.; Mihov B.; Doroshenko V.; Slavcheva-Mihova L.; Gómez J.; Larionov V.; Acosta-Pulido J.; Raiteri C.; Nazarov S.; Ehgamberdiev S.; Villata M.; Vittorini V.; Tornikoski M.; Järvelä E.; Bulgarelli A.; Larionova L.; Donnarumma I.; Molina S.; Borman G.; Longo F.; Verrecchia F.; D'Ammando F.; Morselli A.; Bach U.; Righini S.; Lucarelli F.

AGILE, Fermi, Swift, and GASP/WEBT multi-wavelength observations of the high-redshift blazar 4C +71.07 in outburst

Vercellone S.; Romano P.; Piano G.; Vittorini V.; Donnarumma I.; Munar-Adrover P.; Raiteri C.; Villata M.; Verrecchia F.; Lucarelli F.; Pittori C.; Bulgarelli A.; Fioretti V.; Tavani M.; Acosta-Pulido J.; Agudo I.; Arkharov A.; Bach U.; Bachev R.; Borman G.; Butuzova M.; Carnerero M.; Casadio C.; Damljanovic G.; D'Ammando F.; Di Paola A.; Doroshenko V.; Efimova N.; Ehgamberdiev S.; Giroletti M.; Gómez J.; Grishina T.; Järvelä E.; Klimanov S.; Kopatskaya E.; Kurtanidze O.; Lähteenmäki A.; Larionov V.; Larionova L.; Mihov B.; Mirzaqulov D.; Molina S.; Morozova D.; Nazarov S.; Orienti M.; Righini S.; Savchenko S.; Semkov E.; Slavcheva-Mihova L.; Strigachev A.; Tornikoski M.; Troitskaya Y.; Vince O.; Cattaneo P.; Colafrancesco S.; Longo F.; Morselli A.; Paoletti F.; Parmiggiani N.

URI: https://dspace.kpfu.ru/xmlui/handle/net/155462

Date: 2019

Abstract:

© ESO 2019. 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.

Show full item record