AGILE, Fermi, Swift, and GASP-WEBT multi-wavelength observations of the high-redshift blazar 4C \(+\)71.07 in outburst
The flat-spectrum radio quasar 4C \(+\)71.07 is a high-redshift (\(z=2.172\)), \(\gamma\)-loud blazar whose optical emission is dominated by the thermal radiation from accretion disc. 4C \(+\)71.07 has been detected in outburst twice by the AGILE \(\gamma\)-ray satellite during the period end of Oct...
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Abstract | The flat-spectrum radio quasar 4C \(+\)71.07 is a high-redshift (\(z=2.172\)), \(\gamma\)-loud blazar whose optical emission is dominated by the thermal radiation from accretion disc. 4C \(+\)71.07 has been detected in outburst twice by the AGILE \(\gamma\)-ray satellite during the period end of October - mid November 2015, when it reached a \(\gamma\)-ray flux of the order of \(F_{\rm E>100\,MeV} = (1.2 \pm 0.3)\times 10^{-6}\) photons cm\(^{-2}\) s\(^{-1}\) and \(F_{\rm E>100\,MeV} = (3.1 \pm 0.6)\times 10^{-6}\) photons cm\(^{-2}\) s\(^{-1}\), respectively, allowing us to investigate the properties of the jet and of the emission region. We investigated its spectral energy distribution by means of almost simultaneous observations covering the cm, mm, near-infrared, optical, ultra-violet, X-ray and \(\gamma\)-ray energy bands obtained by the GASP-WEBT Consortium, the Swift and the AGILE and Fermi satellites. The spectral energy distribution of the second \(\gamma\)-ray flare (the one whose energy coverage is more dense) can be modelled by means of a one-zone leptonic model, yielding a total jet power of about \(4\times10^{47}\) erg s\(^{-1}\). 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, large-mass black-hole flat-spectrum radio quasars might be good targets for future \(\gamma\)-ray satellites such as e-ASTROGAM. |
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AbstractList | A&A 621, A82 (2019) The flat-spectrum radio quasar 4C $+$71.07 is a high-redshift ($z=2.172$),
$\gamma$-loud blazar whose optical emission is dominated by the thermal
radiation from accretion disc. 4C $+$71.07 has been detected in outburst twice
by the AGILE $\gamma$-ray satellite during the period end of October - mid
November 2015, when it reached a $\gamma$-ray flux of the order of $F_{\rm
E>100\,MeV} = (1.2 \pm 0.3)\times 10^{-6}$ photons cm$^{-2}$ s$^{-1}$ and
$F_{\rm E>100\,MeV} = (3.1 \pm 0.6)\times 10^{-6}$ photons cm$^{-2}$ s$^{-1}$,
respectively, allowing us to investigate the properties of the jet and of the
emission region. We investigated its spectral energy distribution by means of
almost simultaneous observations covering the cm, mm, near-infrared, optical,
ultra-violet, X-ray and $\gamma$-ray energy bands obtained by the GASP-WEBT
Consortium, the Swift and the AGILE and Fermi satellites. The spectral energy
distribution of the second $\gamma$-ray flare (the one whose energy coverage is
more dense) can be modelled by means of a one-zone leptonic model, yielding a
total jet power of about $4\times10^{47}$ erg s$^{-1}$. 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, large-mass black-hole flat-spectrum radio quasars might be good
targets for future $\gamma$-ray satellites such as e-ASTROGAM. The flat-spectrum radio quasar 4C \(+\)71.07 is a high-redshift (\(z=2.172\)), \(\gamma\)-loud blazar whose optical emission is dominated by the thermal radiation from accretion disc. 4C \(+\)71.07 has been detected in outburst twice by the AGILE \(\gamma\)-ray satellite during the period end of October - mid November 2015, when it reached a \(\gamma\)-ray flux of the order of \(F_{\rm E>100\,MeV} = (1.2 \pm 0.3)\times 10^{-6}\) photons cm\(^{-2}\) s\(^{-1}\) and \(F_{\rm E>100\,MeV} = (3.1 \pm 0.6)\times 10^{-6}\) photons cm\(^{-2}\) s\(^{-1}\), respectively, allowing us to investigate the properties of the jet and of the emission region. We investigated its spectral energy distribution by means of almost simultaneous observations covering the cm, mm, near-infrared, optical, ultra-violet, X-ray and \(\gamma\)-ray energy bands obtained by the GASP-WEBT Consortium, the Swift and the AGILE and Fermi satellites. The spectral energy distribution of the second \(\gamma\)-ray flare (the one whose energy coverage is more dense) can be modelled by means of a one-zone leptonic model, yielding a total jet power of about \(4\times10^{47}\) erg s\(^{-1}\). 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, large-mass black-hole flat-spectrum radio quasars might be good targets for future \(\gamma\)-ray satellites such as e-ASTROGAM. |
Author | Savchenko, S S Tornikoski, M Pittori, C Morselli, A Arkharov, A A Giroletti, M Verrecchia, F Semkov, E Molina, S N Colafrancesco, S A Di Paola Piano, G Efimova, N V Damljanovic, G Kopatskaya, E N Grishina, T S Lucarelli, F Mihov, B Orienti, M Borman, G A Villata, M Raiteri, C M Lähteenmäki, A Slavcheva-Mihova, L Bachev, R Romano, P Larionova, L V Mirzaqulov, D O Strigachev, A Ehgamberdiev, Sh A Carnerero, M I Vercellone, S Doroshenko, V T Donnarumma, I Fioretti, V Munar-Adrover, P Morozova, D A Paoletti, F Righini, S Gómez, J L Bach, U Bulgarelli, A Longo, F Klimanov, S A D'Ammando, F Vittorini, V Tavani, M Kurtanidze, O M Parmiggiani, N Acosta-Pulido, J A Nazarov, S V Agudo, I Butuzova, M S Cattaneo, P W Järvelä, E Vince, O Casadio, C Larionov, V M Troitskaya, Yu V |
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Snippet | The flat-spectrum radio quasar 4C \(+\)71.07 is a high-redshift (\(z=2.172\)), \(\gamma\)-loud blazar whose optical emission is dominated by the thermal... A&A 621, A82 (2019) The flat-spectrum radio quasar 4C $+$71.07 is a high-redshift ($z=2.172$), $\gamma$-loud blazar whose optical emission is dominated by the... |
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SubjectTerms | Consortia Deposition Emission analysis Energy bands Energy dissipation Photons Physics - High Energy Astrophysical Phenomena Quasars Red shift Satellites Spectral energy distribution Thermal radiation |
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Title | AGILE, Fermi, Swift, and GASP-WEBT multi-wavelength observations of the high-redshift blazar 4C \(+\)71.07 in outburst |
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