Paola Pietrini

TL;DR: In this paper, the effect of radiation pressure from ionizing photons on black hole (BH) mass estimates based on the application of the virial theorem to broad emission lines in AGN spectra was considered.

TL;DR: In this paper, a spectral and temporal analysis of a 9-d long XMM-Newton monitoring of the narrow-line Seyfert 1 galaxy was presented, showing that the strong changes in the spectral shape, which occurred during this observation, can be interpreted as due to broad line region clouds crossing the line of sight to the X-ray source.

TL;DR: In this article, the authors used a long (300 ks) continuous Suzaku X-ray observation of the active nucleus in NGC 1365 to investigate the structure of the circumnuclear broad line region (BLR) clouds through their occultation of the Xray source, and found that the clouds surrounding the black hole are far from having a spherical geometry, instead they have a strongly elongated and cometary shape, with a dense head and an expanding, dissolving tail.

TL;DR: In this article, the authors used a long (300 ksec) continuous Suzaku X-ray observation of the active nucleus in NGC1365 to investigate the structure of the circumnuclear BLR clouds through their occultation of the Xray source, and found that the clouds surrounding the black hole are far from having a spherical geometry, instead they have a strongly elongated and cometary shape, with a dense head and an expanding, dissolving tail.

TL;DR: In this paper, the authors investigated the effects of intrinsic dispersions associated with the virial relations providing M-BH, and showed that they explain the discrepancies between the observed L/L-Edd distributions of type-1 and type-2 AGNs.