Variable low-energy absorption in the X-ray spectrum of ESO 103-G35

Details Variable low-energy absorption in the X-ray spectrum of ESO 103-G35 Variable low-energy absorption in the X-ray spectrum of ESO 103-G35

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.231.1145w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 231, April 15, 1988, p. 1145-1152.

Astronomy and Astrophysics

Astronomy

33

Absorption Cross Sections, Active Galactic Nuclei, Seyfert Galaxies, Variable Stars, X Ray Spectra, Exosat Satellite, Heao 1, Line Of Sight, Spatial Distribution, X Ray Astronomy, X Ray Sources

Scientific paper

EXOSAT observations of the Seyfert 1.9 galaxy, ESO 103-G35, have revealed that this source has a heavily absorbed and variable low-energy X-ray spectrum. Specifically the inferred column density was observed to decrease from ≡1.7×1023 to 1.0×1023cm-2 over a 90-day period. This variation is interpreted in terms of an X-ray absorbing screen composed of broad-line clouds moving out of the line-of-sight to the X-ray source.

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