Matches in SemOpenAlex for { <https://semopenalex.org/work/W3101787820> ?p ?o ?g. }
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- W3101787820 abstract "We present the best sensitivity and angular resolution maps of the molecular disk and outflow of Mrk 231, as traced by CO observations obtained with IRAM/PdBI, and we analyze archival Chandra and NuSTAR observations. We constrain the physical properties of both the molecular disk and outflow, the presence of a highly-ionized ultra-fast nuclear wind, and their connection. The molecular outflow has a size of ~1 kpc, and extends in all directions around the nucleus, being more prominent along the south-west to north-east direction, suggesting a wide-angle biconical geometry. The maximum projected velocity of the outflow is nearly constant out to ~1 kpc, thus implying that the density of the outflowing material decreases from the nucleus outwards as $r^{-2}$. This suggests that either a large part of the gas leaves the flow during its expansion or that the bulk of the outflow has not yet reached out to ~1 kpc, thus implying a limit on its age of ~1 Myr. We find $dot M_{OF}=[ 500-1000]~ M_{odot}~yr^{-1}$ and $dot E_{kin,OF}=[7-10]times 10^{43}$ erg s$^{-1}$. Remarkably, our analysis of the X-ray data reveals a nuclear ultra-fast outflow (UFO) with velocity -20000 km s$^{-1}$, $dot M_{UFO}=[0.3- 2.1] ~M_odot yr^{-1}$, and momentum load $dot P_{UFO}/dot P_{rad}=[0.2-1.6]$.We find $dot E_{kin,UFO}sim dot E_{kin,OF}$ as predicted for outflows undergoing an energy conserving expansion. This suggests that most of the UFO kinetic energy is transferred to mechanical energy of the kpc-scale outflow, strongly supporting that the energy released during accretion of matter onto super-massive black holes is the ultimate driver of giant massive outflows. We estimate a momentum boost $dot P_{OF}/dot P_{UFO}approx [30-60]$. The ratios $dot E_{kin, UFO}/L_{bol,AGN} =[ 1-5]%$ and $dot E_{kin,OF}/L_{bol,AGN} = [1-3]%$ agree with the requirements of the most popular models of AGN feedback." @default.
- W3101787820 created "2020-11-23" @default.
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- W3101787820 date "2015-11-01" @default.
- W3101787820 modified "2023-10-16" @default.
- W3101787820 title "The multi-phase winds of Markarian 231: from the hot, nuclear, ultra-fast wind to the galaxy-scale, molecular outflow" @default.
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- W3101787820 doi "https://doi.org/10.1051/0004-6361/201526020" @default.
- W3101787820 hasPublicationYear "2015" @default.