1H0419-577 - A 2-STATE SEYFERT-GALAXY

Citation
M. Guainazzi et al., 1H0419-577 - A 2-STATE SEYFERT-GALAXY, Nuclear physics. B, Proceedings supplement, 69(1-3), 1999, pp. 533-536
Citations number
13
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
09205632
Volume
69
Issue
1-3
Year of publication
1999
Pages
533 - 536
Database
ISI
SICI code
0920-5632(1999)69:1-3<533:1-A2S>2.0.ZU;2-#
Abstract
The preliminary results of the BeppoSAX observation of the radio-quiet AGN 1H0419-577 are presented. Despite its broad line optical spectrum , the intermediate X-ray spectrum (i.e. 2-10 keV) is flatter than typi cally observed in Seyfert 1s and no iron line is significantly detecte d. Even more intriguingly, a 1992 ROSAT pointed observation suggests a dramatic (Delta Gamma similar or equal to 1) change in the spectral s hape for E less than or similar to 2 keV. Such behavior is briefly dis cussed in the framework of our current understanding of Comptonization scenarios in the nuclear regions of radio-quiet AGN.