A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
The Energetics of Launching the Most Powerful Jets in Quasars: A Study of 3C 82
Tekijät: Brian Punsly, Gary J. Hill, Paola Marziani, Preeti Kharb, Marco Berton, Luca Crepaldi, Briana L. Indahl, Greg Zeimann
Kustantaja: IOP PUBLISHING LTD
Julkaisuvuosi: 2020
Journal: Astrophysical Journal
Tietokannassa oleva lehden nimi: ASTROPHYSICAL JOURNAL
Lehden akronyymi: ASTROPHYS J
Artikkelin numero: ARTN 169
Vuosikerta: 898
Numero: 2
Sivujen määrä: 21
ISSN: 0004-637X
eISSN: 1538-4357
DOI: https://doi.org/10.3847/1538-4357/aba1e8
Rinnakkaistallenteen osoite: https://acris.aalto.fi/ws/portalfiles/portal/51104444/Punsly_Energetics_of_launching_2020_ApJ_898_169.pdf
Tiivistelmä
3C 82 at a redshift of 2.87 is the most distant 3C (Third Cambridge Catalogue) quasar. Thus, it is a strong candidate to have the most-luminous radio lobes in the universe. 3C 82 belongs to the class of compact steep-spectrum radio sources. We use single-dish and interferometric radio observations in order to model the plasma state of these powerful radio lobes. It is estimated that the long-term time-averaged jet power required to fill these lobes with leptonic plasma is (Q) over bar approximate to 2.66 +/- 1.33 x 10(47) erg s(-1), among the largest time-averaged jet powers from a quasar. Positing protonic lobes is not tenable as they would require two orders of magnitude more mass transport to the lobes than was accreted to the central black hole during their formation. The first high signal-to-noise optical spectroscopic observation obtained of this object indicates that there is a powerful high-ionization broad-line wind with a kinetic power of similar to 10(45) erg s(-1) and a velocity of similar to 0.01c. We also estimate from the broad lines in 2018 and the UV continuum in three epochs spread out over three decades that the accretion flow bolometric luminosity is L-bol approximate to 3.2-5.8 x 10(46) erg s(-1). The ratio of (Q) over bar /L-bol approximate to 5.91 +/- 3.41 is perhaps the largest of any known quasar. Extremely powerful jets tend to strongly suppress powerful winds of ionized baryonic matter. Consequently, 3C 82 provides a unique laboratory for studying the dynamical limits of the central engine of outflow initiation in quasars.
3C 82 at a redshift of 2.87 is the most distant 3C (Third Cambridge Catalogue) quasar. Thus, it is a strong candidate to have the most-luminous radio lobes in the universe. 3C 82 belongs to the class of compact steep-spectrum radio sources. We use single-dish and interferometric radio observations in order to model the plasma state of these powerful radio lobes. It is estimated that the long-term time-averaged jet power required to fill these lobes with leptonic plasma is (Q) over bar approximate to 2.66 +/- 1.33 x 10(47) erg s(-1), among the largest time-averaged jet powers from a quasar. Positing protonic lobes is not tenable as they would require two orders of magnitude more mass transport to the lobes than was accreted to the central black hole during their formation. The first high signal-to-noise optical spectroscopic observation obtained of this object indicates that there is a powerful high-ionization broad-line wind with a kinetic power of similar to 10(45) erg s(-1) and a velocity of similar to 0.01c. We also estimate from the broad lines in 2018 and the UV continuum in three epochs spread out over three decades that the accretion flow bolometric luminosity is L-bol approximate to 3.2-5.8 x 10(46) erg s(-1). The ratio of (Q) over bar /L-bol approximate to 5.91 +/- 3.41 is perhaps the largest of any known quasar. Extremely powerful jets tend to strongly suppress powerful winds of ionized baryonic matter. Consequently, 3C 82 provides a unique laboratory for studying the dynamical limits of the central engine of outflow initiation in quasars.
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