Can I read Weak Reprocessed Features in the Broad Line Radio Galaxy 3C382 on EtoBox?

Weak Reprocessed Features in the Broad Line Radio Galaxy 3C382 by Grandi, Paola; Maraschi, Laura; Urry, C. Meg; Matt, Giorgio is a scholarly article available to read on EtoBox.

What is Weak Reprocessed Features in the Broad Line Radio Galaxy 3C382 about?

We present a detailed X-ray study of the Broad Line Radio Galaxy 3C382, observed with the BeppoSAX satellite in a very bright state. The continuum emission is well modeled with a power law that steepens at high energies, with an e-folding energy of about 120 keV. At soft energies a clear excess of emission is detected, which can not be explained solely by the extended thermal halo seen in a ROSAT HRI image. A second, more intense soft X-ray component, possibly related to an accretion disk, is required by the data. Both a reflection component (R=0.3) and an iron line (EW \sim 50) are detected, at levels much weaker than in Seyfert galaxies, suggesting a common origin. Combining our measurements with results from the literature we find that the iron line has remained approximately constant over 9 years while the continuum varied by a factor of 5. Thus the fluorescent gas does not respond promptly to the variations of the X-ray primary source, suggesting that the reprocessing site is located away, likely at parsec distances. While the continuum shape indicates that X-rays derive from a thermal Comptonization process, the weakness of other spectral features implies that either the uppe

Author

Grandi, Paola; Maraschi, Laura; Urry, C. Meg; Matt, Giorgio

Published

2001

Language

EN