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

Punsly, Brian; Hill, Gary J.; Marziani, Paola; Kharb, P.; Berton, M.; Crepaldi, Luca; Indahl, Briana L.; Zeimann, Greg

doi:10.3847/1538-4357/aba1e8

Cited by 6 publications

(3 citation statements)

References 82 publications

(128 reference statements)

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“…Nonetheless, we can estimate the relative contribution of mechanical feedback energy from AGN outflow activity. As a reference, one of the most powerful radio-loud QSOs, 3C82, has a jet power of the order of 10 47 ergs s −1 (Punsly et al 2020). Theoretical studies which aim to reproduce the formation of local massive elliptical galaxies have indicated an AGN mechanical outflow energy estimate of the order of 10 42−43 ergs, with a rate of ∼ 3×10 −5 Myr −1 (Gaspari et al 2012).…”

Section: Comparisons Between Mism Estimates Derived From Optically Th...mentioning

confidence: 99%

Turbulent Gas in Lensed Planck-selected Starbursts at redshifts 1-3.5

Harrington,

Weiss,

Yun

et al. 2020

Preprint

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Dusty star-forming galaxies at high redshift (1 < z < 3) represent the most intense star-forming regions in the Universe. Key aspects to these processes are the gas heating and cooling mechanisms. Although it is well known that these galaxies are gas-rich, little is known about the gas excitation conditions, as only few detailed radiative transfer studies have been carried out due to a lack of line detections per galaxy. Here we examine these processes in a sample of 24 strongly lensed star-forming galaxies identified by the Planck satellite (LPs) at z ∼ 1.1 − 3.5. We analyze 162 CO rotational transitions (ranging from J up = 1 − 12) and 37 atomic carbon fine-structure lines ([CI]) in order to characterize the physical conditions of the gas in sample of LPs. We simultaneously fit the CO and [CI] lines, and the dust continuum emission, using two different non-LTE, radiative transfer models. The first model represents a two component gas density, while the second assumes a turbulence driven log-normal gas density distribution. These LPs are among the most gas-rich, infrared (IR) luminous

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Section: Comparisons Between Mism Estimates Derived From Optically Th...mentioning

confidence: 99%

Turbulent Gas in Lensed Planck-selected Starbursts at redshifts 1-3.5

Harrington,

Weiss,

Yun

et al. 2020

Preprint

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“…We have used this formalism to study a panoply of phenomena, major flares in a Galactic black hole, a γ-ray burst and flares in a radio quiet quasar (Punsly 2012(Punsly , 2019Reynolds et al 2009Reynolds et al , 2020. Most importantly, we used this method in Punsly et al (2020) to study the radio lobes in the super-luminous radio quasar, 3C 82 (which should be consulted for the details of the calculational method). The SSA turnover provides information on the size of the region that produces the preponderance of emission.…”

Section: A Physical Model Of the North Lobe Ssa Power Lawmentioning

confidence: 99%

“…There is not a unique solution to the physical parameters of the North Lobe that recreate the fit in Figure 13. In this section we explore the solution space as calculated in (Punsly et al 2020).…”

Section: A Physical Model Of the North Lobe Ssa Power Lawmentioning

confidence: 99%

The Highly Self-Absorbed Blazar, PKS\,1351$-$018

Punsly,

Frey,

Reynolds

et al. 2021

Preprint

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PKS 1351−018 at a redshift of z = 3.71 is one of the most luminous, steady synchrotron sources with a luminosity > 10 47 erg s −1 . The synchrotron luminosity does not seem to vary by more than ∼ 25% over 35 years. In order to appreciate this remarkable behavior, if it were at z = 0.5, it would have a flux density at 15 GHz in a range of 110 − 137 Jy over 11 yrs. In spite of this steady behavior, two strong γ-ray flares 10 49 erg s −1 were detected in 2011 and 2016. There is blazar-like behavior coexisting with the steady behavior. This study is aimed at elucidating the dual nature of this source. We find that the radio source is extremely compact with a bright core and a steep spectrum secondary component, 12 mas away, that appears to be constant in position and flux density in six epochs from 1995 to 2018. We estimate that a jet with a time averaged power of (5.2 ± 3.2) × 10 45 erg s −1 terminates in this lobe that is advancing 0.9c at a deprojected distance of 1 − 3 kpc from the central engine. This is the rare case of a young (∼ 6000 yr), very powerful radio source that is viewed a few degrees from the jet axis. We find evidence of a high velocity (4000 km s −1 ), high

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The Energetics of the Central Engine in the Powerful Quasar 3C 298

Punsly

Groeneveld

Hill

et al. 2022

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The compact steep-spectrum radio source 3C 298 (redshift of 1.44) has the largest 178 MHz luminosity in the Third Cambridge Revised Catalogue (3CR); its radio lobes are among the most luminous in the universe. The plasma state of the radio lobes is modeled with the aid of interferometric radio observations (in particular, the new Low Frequency Array observation and archival MERLIN data) and archival single-station data. It is estimated that the long-term time-averaged jet power required to fill these lobes with leptonic plasma is Q ¯ ≈ 1.28 ± 0.51 × 10 47 erg s − 1 , rivaling the largest time-averaged jet powers from any quasar. Supporting this notion of extraordinary jet power is a 0.5–10 keV luminosity of ≈ 5.2 × 1046 erg s−1, comparable to luminous blazars, yet there is no other indication of strong relativistic beaming. We combine two new high signal-to-noise ratio optical spectroscopic observations from the Hobby-Eberly Telescope with archival Hubble Space Telescope, Two Micron All Sky Survey, and Galaxy Evolutionary Explorer data to compute a bolometric luminosity from the accretion flow of L bol ≈ 1.55 ± 0.15 × 1047 erg s−1. The ratio, Q ¯ / L bol ≈ 1 , is the approximate upper limit for quasars. Characteristic of a large Q ¯ / L bol , we find an extreme-ultraviolet (EUV) spectrum that is very steep (the “EUV deficit” of powerful radio quasars relative to radio-quiet quasars), and this weak ionizing continuum is likely a contributing factor to the relatively small equivalent widths of the broad emission lines in this quasar.

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

Cited by 6 publications

References 82 publications

Turbulent Gas in Lensed Planck-selected Starbursts at redshifts 1-3.5

Turbulent Gas in Lensed Planck-selected Starbursts at redshifts 1-3.5

The Highly Self-Absorbed Blazar, PKS\,1351$-$018

The Energetics of the Central Engine in the Powerful Quasar 3C 298

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