3 papers
astro-ph2003
The Intimate Link Between Accretion and BELR
F. Nicastro, A. Martocchia, G. Matt
In this paper I present evidence suggesting that the absence or presence of Hidden Broad Line Regions (HBLRs) in Seyfert 2 galaxies is regulated by the rate at which matter accrete…
astro-ph2002
Evidence for a relativistic iron line in GRS 1915+105
A. Martocchia, G. Matt, V. Karas +2
We report on the discovery of a relativistic iron Kαfluorescent emission line in the BeppoSAX spectrum of the microquasar GRS 1915+105, taken on April 19, 1998, when the line was u…
astro-ph2002
On the origin of the broad, relativistic iron line of MCG-6-30-15 observed by XMM-Newton
Andrea Martocchia, Giorgio Matt, Vladimir Karas
The relativistic iron line profile recently observed by XMM-Newton in the spectrum of the Seyfert 1 galaxy MCG--6-30-15 (Wilms et al., 2001) is discussed in the framework of the la…