Variable low-energy absorption in the X-ray spectrum of ESO 103-G35.
Turner, T. J.; Warwick, R. S.; Pounds, K. A.
United Kingdom
Abstract
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 ~1.7x10^23^ to ~1.0x10^23^ cm^-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.