Nuclear obscuration in the high-ionization Seyfert 2 galaxy Tol 0109-383
Abstract
We report the BeppoSAX detection of a hard X-ray excess in the X-ray spectrum of the classical high-ionization Seyfert 2 galaxy Tol0109-383. The X-ray emission of this source observed below 7 keV is dominated by reflection from both cold and ionized gas, as seen in the ASCA data. The excess hard X-ray emission is presumably due to the central source absorbed by an optically thick obscuring torus with N(H)~2e24 cm-2. The strong cold X-ray reflection, if it is produced at the inner surface of the torus, is consistent with the picture where much of the inner nucleus of Tol0109-383 is exposed to direct view, as indicated by optical and infrared properties. However, the X-ray absorption must occur at small radii in order to hide the central X-ray source but leave the optical high-ionization emission line region unobscured. This may also be the case for objects like the Seyfert 1 galaxy Mrk231.
Cite
@article{arxiv.astro-ph/0104175,
title = {Nuclear obscuration in the high-ionization Seyfert 2 galaxy Tol 0109-383},
author = {K. Iwasawa and G. Matt and A. C. Fabian and S. Bianchi and W. N. Brandt and M. Guainazzi and T. Murayama and Y. Taniguchi},
journal= {arXiv preprint arXiv:astro-ph/0104175},
year = {2009}
}
Comments
7 pages, MNRAS in press