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Title: Extended X-ray emission from a quasar-driven superbubble

We present observations of extended, 20 kpc scale soft X-ray gas around a luminous obscured quasar hosted by an ultraluminous infrared galaxy caught in the midst of a major merger. The extended X-ray emission is well fit as a thermal gas with a temperature of kT ≈280 eV and a luminosity of L {sub X} ≈ 10{sup 42} erg s{sup –1} and is spatially coincident with a known ionized gas outflow. Based on the X-ray luminosity, a factor of ∼10 fainter than the [O III] emission, we conclude that the X-ray emission is either dominated by photoionization, or by shocked emission from cloud surfaces in a hot quasar-driven wind.
Authors:
;  [1] ;  [2] ;  [3] ;  [4]
  1. Department of Astrophysics, Princeton University, Princeton, NJ 08540 (United States)
  2. Department of Physics, Sam Houston State University, Huntsville, TX 77341 (United States)
  3. Center for Astrophysical Sciences, Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States)
  4. Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309 (United States)
Publication Date:
OSTI Identifier:
22356669
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 788; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; EMISSION; GALAXIES; INTERACTIONS; LUMINOSITY; PHOTOIONIZATION; QUASARS; SOFT X RADIATION; SURFACES