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Are Seyfert 2 Galaxies without Polarized Broad Emission Lines More Obscured?

Wang, Jun-Xian; Jiang, Peng; Shu, Xin-Wen

New XMM-Newton data of seven Seyfert 2 galaxies with optical spectropolarimetric observations are presented. An analysis of the 0.5-10 keV spectra shows that four Seyfert 2 galaxies with polarized broad lines (PBLs) are absorbed by N_H<10²⁴ cm^-2, while two of three Seyfert 2 galaxies without PBLs show evidence of…

Geometry of Broad Line Regions of Active Galactic Nuclei

Lü, Xiao-Rong

It has long remained an open question as to the geometry of the broad line region (BLR) in active galactic nuclei (AGNs). The reverberation mapping technique which measures the response of the broad emission lines to the ionizing continuum, when combined with multiwavelength continuum fitted by sophisticated accretion disks, provides a way of prob…

A Deprojection Analysis of Abell 1650 with XMM-Newton

Chen, Li; Jia, Shu-Mei; Chen, Yong

We revisit the XMM-Newton observation of the galaxy cluster Abell 1650 with a deprojection technique. We find that the radial deprojected spectra of Abell 1650 can be marginally fitted by a single-temperature model. In order to study the properties of the central gas, we fit the spectra of the central two regions with a two-temperature model. The …