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Winds Versus Jets in Active Galactic Nuclei
GalaxiesThe well-established anti-correlation between disk winds and relativistic jets in X-ray binaries is often interpreted in a scale-invariant black hole accretion context. If so, active galactic nuclei (AGN) should exhibit a direct mass-scaled analog.
David Garofalo +5 more
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Evidence for a Fast Soft X-Ray Wind in M82 from XMM-RGS
The Astrophysical JournalStarburst wind models predict that metals and energy are primarily carried out of the disk by hot gas ( T > 10 ^6 K), but the low energy resolution of X-ray CCD observations results in large uncertainties on the mass and energy loading.
Erin Boettcher, Edmund Hodges-Kluck
doaj +1 more source
The location and kinematics of the emission line regions in Active Galactic Nuclei [PDF]
, 2008 This thesis contains the results from a study of the optical emission lines of various samples of active galactic nuclei (AGN). We have used three separate techniques to determine the precise kinematics and the relative location of the emission line ...
Mullaney, J R, Mullaney, J.R.
core
Thermospheric winds and temperatures above Mawson, Antarctica, observed with an all-sky imaging, Fabry-Perot spectrometer [PDF]
, 2009 A new all-sky imaging Fabry-Perot spectrometer has been installed at Mawson station (67°36' S, 62°52' E), Antarctica. This instrument is capable of recording independent spectra from many tens of locations across the sky simultaneously.
Anderson, C. +9 more
core +2 more sources
Hot Gas Outflow Properties of the Starburst Galaxy NGC 4945
The Astrophysical JournalWe analyze 330 ks of Chandra X-ray imaging and spectra of the nearby, edge-on starburst and Seyfert type 2 galaxy NGC 4945 to measure the hot gas properties along the galactic outflows. We extract and model spectra from 15 regions extending from −0.55 to
Natalia Porraz Barrera +7 more
doaj +1 more source
Observational Constraints on Cool Gas Clouds in M82’s Starburst-driven Outflow
The Astrophysical JournalStar formation feedback can drive large-scale, multiphase galactic outflows. The dynamical and thermodynamical interaction between the hot and cooler phases is a prime focus of both observational and theoretical work.
Sebastian Lopez +4 more
doaj +1 more source
The Astrophysical Journal, 1992 The combined effect of winds from a cluster of stars in the central 0.8 pc of the Galaxy is modeled as uniform power and mass input over the central region. The flow becomes supersonic outside the central region, and the expected decrease in pressure is in approximate accord with observations.
openaire +1 more source
Oscillatory Line-driven Winds: The Role of Atmospheric Stratification
The Astrophysical JournalTime-dependent numerical studies of line-driven winds using the Sobolev approximation have a history spanning over three decades. In many of these studies, the wind solutions display notorious oscillations. Two clues suggest the oscillations originate at
Joshua A. Key +4 more
doaj +1 more source
On the Transition from Efficient to Inefficient Line Driving in Irradiated Flows
The Astrophysical JournalObservations of ionized outflows from active galactic nuclei (AGNs) provide evidence of energy and momentum transfer from the AGN radiation to the plasma. The AGN radiation is very energetic.
Randall Dannen +3 more
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The Astrophysical Journal, 2023 The inner few parsecs of the Milky Way’s Galactic center contain the central accreting supermassive black hole, over a million stars, and multiple large gaseous structures.
Siddhant Solanki +4 more
doaj +1 more source