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29 March 2024
 
  » arxiv » astro-ph/9701033

 Article overview


The ASCA X-ray spectrum of the powerful radio galaxy 3C109
S.W. Allen ; A.C. Fabian ; E. Idesawa ; H. Inoue ; T. Kii ; C. Otani ;
Date 8 Dec 1996
Subject astro-ph
AbstractWe report the results from an ASCA X-ray observation of the powerful Broad Line Radio Galaxy, 3C109. The ASCA spectra confirm our earlier ROSAT detection of intrinsic X-ray absorption associated with the source. The absorbing material obscures a central engine of quasar-like luminosity. The luminosity is variable, having dropped by a factor of two since the ROSAT observations 4 years before. The ASCA data also provide evidence for a broad iron emission line from the source, with an intrinsic FWHM of ~ 120,000 km/s. Interpreting the line as fluorescent emission from the inner parts of an accretion disk, we can constrain the inclination of the disk to be $> 35$ degree, and the inner radius of the disk to be $< 70$ Schwarzschild radii. Our results support unified schemes for active galaxies, and demonstrate a remarkable similarity between the X-ray properties of this powerful radio source, and those of lower luminosity, Seyfert 1 galaxies.
Source arXiv, astro-ph/9701033
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