AXAF Grating Spectroscopy of the Bright and Complex Seyfert 1 Galaxy NGC 4051

Details AXAF Grating Spectroscopy of the Bright and Complex Seyfert 1 Galaxy NGC 4051 AXAF Grating Spectroscopy of the Bright and Complex Seyfert 1 Galaxy NGC 4051

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..120b&link_type=abstract

Chandra Proposal ID #01700640

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Chandra Proposal Id #01700640

Scientific paper

We propose to make the first grating-resolution X-ray spectrum of NGC 4051 with the AXAF LETG. This bright Seyfert 1 has a low Galactic column and a complex X-ray spectrum. Oxygen edges are seen from a `warm absorber' and additional poorly-understood spectral features are also seen. We will resolve and model the spectral complexity to determine its nature. We expect O, Ne, C and other X-ray lines from the warm absorber, and we will use line energies/widths to constrain the bulk velocity/velocity dispersion of the warm absorber. X-ray line strengths will constrain the warm absorber covering factor, and we will critically examine if the warm absorber is in photoionization equilibrium. We will also obtain HST STIS spectra to study UV absorption and test the UV/X-ray absorber model.

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