2019/10/31 by R. Smith, Robyn N. Smith, Francesco Tombesi +5
Physics and Astronomy · #Absorption (acoustics) #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gamma-ray bursts and supernovae #Infrared #Kinetic energy #Luminous infrared galaxy #Momentum (technical analysis) #Outflow #Physics #Quantum mechanics #Quasar #Star formation #astro-ph.GA #astro-ph.HE
paper · pdf · doi:10.3847/1538-4357/ab4ef8
23 pages, 8 figures; accepted by ApJ
arxiv created 2019/10/31 · openalex publication_date 2019/12/10 · arxiv updated 2020/01/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract We present new XMM-Newton and NuSTAR observations of the galaxy merger IRAS F05189-2524, which is classified as an ultraluminous infrared galaxy and optical Seyfert 2 at z = 0.0426. We test a variety of spectral models that yield a best fit consisting of an absorbed power law with emission and absorption features in the Fe K band. Remarkably, we find evidence for a blueshifted Fe K absorption feature at E = 7.8 keV (rest frame) which implies an ultrafast outflow (UFO) with v out = 0.11 ± 0.01 c . We calculate that the UFO in IRAS F05189-2524 has a mass outflow rate of yr −1 , a kinetic power of 8% L AGN , and a momentum rate (or force) of . Comparing the energetics of the UFO to the observed multi-phase outflows at kiloparsec scales yields an efficiency factor of f ∼ 0.05 for an energy-driven outflow. Given the uncertainties, however, we cannot exclude the possibility of a momentum-driven outflow. Comparing IRAS F05189-2524 with nine other objects with observed UFOs and large-scale galactic outflows suggests that there is a range of efficiency factors for the coupling of the energetics of the nuclear and galaxy-scale outflows that likely depend on specific physical conditions in each object.