The Energetics of Launching the Most Powerful Jets in Quasars: A Study of 3C 82

Brian Punsly*, Gary J. Hill, Paola Marziani, Preeti Kharb, Marco Berton, Luca Crepaldi, Briana L. Indahl, Greg Zeimann

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
133 Downloads (Pure)

Abstract

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.

Original languageEnglish
Article number169
Number of pages21
JournalThe Astrophysical Journal
Volume898
Issue number2
DOIs
Publication statusPublished - 1 Aug 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • Black hole physics
  • Radio jets
  • Relativistic jets
  • Radio loud quasars
  • COMPACT STEEP-SPECTRUM
  • BROAD-LINE REGION
  • X-RAY-EMISSION
  • RADIO-SOURCES
  • POLARIZATION OBSERVATIONS
  • PARTICLE CONTENT
  • ABSORPTION-LINE
  • HOT-SPOTS
  • PROFILES
  • SAMPLE

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