Simultaneous HST and Chandra Observations of the X-Ray Absorbers in Seyfert 1 Galaxies

Details Simultaneous HST and Chandra Observations of the X-Ray Absorbers in Seyfert 1 Galaxies Simultaneous HST and Chandra Observations of the X-Ray Absorbers in Seyfert 1 Galaxies

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..654y&link_type=abstract

Chandra Proposal ID #02700264

Computer Science

Chandra Proposal Id #02700264

Scientific paper

Outflowing photoionized gas with a substantial covering factor is a major nuclear component in at least 50% of Seyfert 1 galaxies. X-ray observations suggest multiple zones with highly variable ionization states and column densities. UV observations reveal multiple kinematic components, each with the column densities varying in time. This variability means simultaneous, high spectral-resolution UV and X-ray observations are the only way to decipher the complex kinematic structure, the true connection between the X-ray and UV absorbers, and hence form an accurate picture of the environs of the inner nucleus. We propose a program to do this for a sample of sources using the STIS echelle grating on HST and the high-energy gratings on Chandra.

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