Extended X-ray emission from a quasar-driven superbubble

Jenny E. Greene, David Pooley, Nadia L. Zakamska, Julia M. Comerford, Ai Lei Sun

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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 X 10 42 erg s-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.

Original languageEnglish (US)
Article number54
JournalAstrophysical Journal
Issue number1
StatePublished - Jun 10 2014

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • galaxies: active
  • galaxies: interactions
  • quasars: general


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