Spatially resolved Chandra HETG spectroscopy of the NLR ionization cone in NGC 1068

  • D. A. Evans
  • , P. M. Ogle
  • , H. L. Marshall
  • , M. A. Nowak
  • , S. Bianchi
  • , M. Guainazzi
  • , D. Dewey
  • , N. S. Schulz
  • , M. S. Noble
  • , J. Houck
  • , C. R. Canizares

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present initial results from a new 440-ks Chandra HETG GTO observation of the canonical Seyfert 2 galaxy NGC 1068. The proximity of NGC 1068, together with Chandra's superb spatial and spectral resolution, allow an unprecedented view of its nucleus and circumnuclear NLR. We perform the first spatially resolved high-resolution X-ray spectroscopy of the 'ionization cone' in any AGN, and use the sensitive line diagnostics offered by the HETG to measure the ionization state, density, and temperature at discrete points along the ionized NLR. We argue that the NLR takes the form of outflowing photoionized gas, rather than gas that has been collisionally ionized by the small-scale radio jet in NGC 1068. We investigate evidence for any velocity gradients in the outflow, and describe our next steps in modeling the spatially resolved spectra as a function of distance from the nucleus.

Original languageEnglish
Title of host publicationX-ray Astronomy-2009
Subtitle of host publicationPresent Status, Multi-Wavelength Approach and Future Perspectives - Proceedings of the International Conference
Pages425-428
Number of pages4
DOIs
StatePublished - 2010
EventInternational Conference on X-ray Astronomy-2009: Present Status, Multi-Wavelength Approach and Future Perspectives - Bologna, Italy
Duration: Sep 7 2009Sep 11 2009

Publication series

NameAIP Conference Proceedings
Volume1248
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on X-ray Astronomy-2009: Present Status, Multi-Wavelength Approach and Future Perspectives
Country/TerritoryItaly
CityBologna
Period09/7/0909/11/09

Keywords

  • galaxies: active
  • galaxies: individual (NGC 1068)
  • X-rays: galaxies

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