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Spatially Resolved Chandra HETG Spectroscopy of the NLR Ionization Cone in NGC 1068

Evans, D. A. and Ogle, P. M. and Marshall, H. L. and Nowak, M. A. and Bianchi, S. and Guainazzi, M. and Dewey, D. and Schulz, N. S. and Noble, M. S. and Houck, J. and Canizares, C. R. (2010) Spatially Resolved Chandra HETG Spectroscopy of the NLR Ionization Cone in NGC 1068. In: International Conference on X-Ray Astronomy-2009: Present Status, Multi-Wavelength Approach and Future Perspectives. AIP Conference Proceedings. No.1248. American Institute of Physics , Melville, NY, pp. 425-428. ISBN 978-0-7354-0795-4.

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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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription Paper
Ogle, P. M.0000-0002-3471-981X
Nowak, M. A.0000-0001-6923-1315
Bianchi, S.0000-0002-4622-4240
Additional Information:© 2010 American Institute of Physics. Published online 15 July 2010.
Group:Infrared Processing and Analysis Center (IPAC)
Subject Keywords:galaxies: active – galaxies: individual (NGC 1068) – X-rays: galaxies
Series Name:AIP Conference Proceedings
Issue or Number:1248
Classification Code:PACS: 98.54.-h, 98.62.Js
Record Number:CaltechAUTHORS:20160420-094542727
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Official Citation: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 and C. R. Canizares Source: AIP Conf. Proc. 1248, 425 (2010);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66304
Deposited By: Ruth Sustaita
Deposited On:20 Apr 2016 17:07
Last Modified:09 Mar 2020 13:19

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