Probing the Hot AGN Outflow in NGC 4151

Details Probing the Hot AGN Outflow in NGC 4151 Probing the Hot AGN Outflow in NGC 4151

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..946o&link_type=abstract

Chandra Proposal ID #03700772

Physics

Chandra Proposal Id #03700772

Scientific paper

We will use Chandra LETGS to study the soft X-ray emission line spectrum from the narrow-line region (NLR) of the Seyfert 1.5 galaxy NGC 4151. This is a follow-up to a successful HETGS observation of NGC 4151 in March 2000. The goal of this proposal is to distinguish between emission from hot(1E7 K) plasma and resonance scattering as the sources of the unusually strong resonance emission lines. If we can verify the existence of a hot plasma, it will provide the necessary pressure to confine the optical and cool X-ray emitting NLR clouds. It will also indicate a very large mass outflow rate for the nucleus, much larger than inferred from optical and UV observations. This study will have important implications for the warm absorbers in Seyfert 1 galaxies and the AGN unification paradigm.

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