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Feedback from Mass Outflows in Nearby Active Galactic Nuclei I. UV and X-ray Absorbers
Cosmology and Nongalactic Astrophysics · Submitted 30 Apr 2012
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We conclude that the outflowing UV and X-ray absorbers in moderate-luminosity AGN have the potential to deliver significant feedback to their environments.
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The abstract, sentence by sentence
We present an investigation into the impact of feedback from outflowing UV and X-ray absorbers in nearby z < 0.04 AGN. From studies of the kinematics, physical conditions, and variability of the absorbers in the literature, we calculate the possible ranges in total mass outflow rate and kinetic luminosity for each AGN, summed over all of its absorbers. These calculations make use of values (or limits) for the radial locations of the absorbers determined from variability, excited-state absorption, and other considerations. From a sample of 10 Seyfert 1 galaxies with detailed photoionization models for their absorbers, we find that 7 have sufficient constraints on the absorber locations to determine feedback parameters. For the low-luminosity AGN NGC 4395, these values are low, although we do not have sufficient constraints on the X-ray absorbers to make definitive conclusions. At least 5 of the 6 Seyfert 1s with moderate bolometric luminosities have mass outflow rates that are 10 - 1000 times the mass accretion rates needed to generate their observed luminosities, indicating that most of the mass outflow originates from outside the inner accretion disk. Three of these (NGC 4051, NGC 3516, and NGC 3783) have kinetic luminosities in the range 0.5 to 5% bolometric, which is the range typically required by feedback models for efficient self-regulation of black-hole and galactic bulge growth. At least 2 of the other 3 (NGC 5548, NGC 4151, and NGC 7469) have kinetic luminosities > 0.1% bolometric, although these values may increase if radial locations can be determined for more of the absorbers. We conclude that the outflowing UV and X-ray absorbers in moderate-luminosity AGN have the potential to deliver significant feedback to their environments.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We present an investigation into the impact of feedback from outflowing UV and X-ray absorbers in nearby z < 0.04 AGN. | contribution 1.00 | 0.83 | 0.04 | unclear 0.55 |
| s1 | From studies of the kinematics, physical conditions, and variability of the absorbers in the literature, we calculate the possible ranges in total mass outflow rate and kinetic luminosity for each AGN, summed over all of its absorbers. | method 0.86 | 0.87 | 0.03 | asserted 0.85 |
| s2 | These calculations make use of values (or limits) for the radial locations of the absorbers determined from variability, excited-state absorption, and other considerations. | method 1.00 | 0.37 | 0.01 | asserted 0.99 |
| s3 | From a sample of 10 Seyfert 1 galaxies with detailed photoionization models for their absorbers, we find that 7 have sufficient constraints on the absorber locations to determine feedback parameters. | result 0.77 | 0.88 | 0.03 | asserted 1.00 |
| s4 | For the low-luminosity AGN NGC 4395, these values are low, although we do not have sufficient constraints on the X-ray absorbers to make definitive conclusions. | limitation 0.56 | 0.75 | 0.02 | asserted 0.92 |
| s5 | At least 5 of the 6 Seyfert 1s with moderate bolometric luminosities have mass outflow rates that are 10 - 1000 times the mass accretion rates needed to generate their observed luminosities, indicating that most of the mass outflow originates from outside the inner accretion disk. | result 0.92 | 0.81 | 0.10 | hedged possibility 0.63 |
| s6 | Three of these (NGC 4051, NGC 3516, and NGC 3783) have kinetic luminosities in the range 0.5 to 5% bolometric, which is the range typically required by feedback models for efficient self-regulation of black-hole and galactic bulge growth. | result 0.93 | 0.81 | 0.07 | asserted 0.99 |
| s7 | At least 2 of the other 3 (NGC 5548, NGC 4151, and NGC 7469) have kinetic luminosities > 0.1% bolometric, although these values may increase if radial locations can be determined for more of the absorbers. | result 0.92 | 0.82 | 0.04 | hedged possibility 0.58 |
| s8 | We conclude that the outflowing UV and X-ray absorbers in moderate-luminosity AGN have the potential to deliver significant feedback to their environments. | interpretation 0.97 | 0.77 | 0.97 | hedged possibility 0.96 |
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The paper
Original abstract
We present an investigation into the impact of feedback from outflowing UV and X-ray absorbers in nearby z < 0.04 AGN. From studies of the kinematics, physical conditions, and variability of the absorbers in the literature, we calculate the possible ranges in total mass outflow rate and kinetic luminosity for each AGN, summed over all of its absorbers. These calculations make use of values (or limits) for the radial locations of the absorbers determined from variability, excited-state absorption, and other considerations. From a sample of 10 Seyfert 1 galaxies with detailed photoionization models for their absorbers, we find that 7 have sufficient constraints on the absorber locations to determine feedback parameters. For the low-luminosity AGN NGC 4395, these values are low, although we do not have sufficient constraints on the X-ray absorbers to make definitive conclusions. At least 5 of the 6 Seyfert 1s with moderate bolometric luminosities have mass outflow rates that are 10 - 1000 times the mass accretion rates needed to generate their observed luminosities, indicating that most of the mass outflow originates from outside the inner accretion disk. Three of these (NGC 4051, NGC 3516, and NGC 3783) have kinetic luminosities in the range 0.5 to 5% bolometric, which is the range typically required by feedback models for efficient self-regulation of black-hole and galactic bulge growth. At least 2 of the other 3 (NGC 5548, NGC 4151, and NGC 7469) have kinetic luminosities > 0.1% bolometric, although these values may increase if radial locations can be determined for more of the absorbers. We conclude that the outflowing UV and X-ray absorbers in moderate-luminosity AGN have the potential to deliver significant feedback to their environments.
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6 arXiv papers cite this in 8 sentences
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Cites it as background 1 paper
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Such formalism is frequent in the literature with differences in implementation of the geometric projection [ref] .
OutLines: Modeling Spectral Lines from Winds, Bubbles, and Outflows · Outflow Properties · 0.84
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