X-ray reflection from cold matter in the nuclei of active galaxies

Details X-ray reflection from cold matter in the nuclei of active galaxies X-ray reflection from cold matter in the nuclei of active galaxies

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.344..132p&link_type=abstract

Nature (ISSN 0028-0836), vol. 344, March 8, 1990, p. 132, 133.

Computer Science

460

Active Galactic Nuclei, Cosmic X Rays, Dark Matter, K Lines, X Ray Sources, Fluorescence, Photoionization, Seyfert Galaxies

Scientific paper

The discovery of continuum absorption and reflection in a composite spectrum from 12 Ginga observations of Seyfert-type AGN is reported. Most of these spectral features are shown to be well-modeled by reprocessing of hard X-ray power-law continuum in a slab (or perhaps a disk) of cold matter. There is also evidence for a substantial line-of-sight column of photoionized material.

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