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Weak Hard X-ray Emission from Two Broad Absorption Line Quasars Observed with NuSTAR: Compton-thick Absorption or Intrinsic X-ray Weakness?
B. Luo, W. N. Brandt, D. M. Alexander +22
We present NuSTAR hard X-ray observations of two X-ray weak broad absorption line (BAL) quasars, PG 1004+130 (radio loud) and PG 1700+518 (radio quiet). Many BAL quasars appear X-r…
The X-ray reflector in NGC 4945: a time and space resolved portrait
A. Marinucci, G. Risaliti, Junfeng Wang +5
We present a time, spectral and imaging analysis of the X-ray reflector in NGC 4945, which reveals its geometrical and physical structure with unprecedented detail. NGC 4945 hosts…
Suzaku broad-band observations of the Seyfert 1 galaxies Mrk 509 and Mrk 841
M. Cerruti, G. Ponti, C. Boisson +5
We report an analysis and modelling of new Suzaku observations of the Seyfert 1 galaxies Mrk509 and Mrk841, taken between April and November 2006,for Mrk509,and between January and…
The X-ray spectral signatures from the complex circumnuclear regions in the Compton thick AGN NGC 424
A. Marinucci, S. Bianchi, G. Matt +4
We present the XMM-Newton RGS and EPIC pn spectra of a long (\simeq 100 ks) observation of one of the soft X-ray brightest Compton-thick Seyfert 2 galaxies, NGC 424. As a first ste…
The final verdict by XMM-Newton: the X-ray obscured Seyfert galaxy NGC5506 has a broad Fe K-alpha line
M. Guainazzi, S. Bianchi, G. Matt +4
We present the first unambiguous evidence of a broad (Gaussian width ~330 eV) component of the iron K-alpha fluorescent emission line in the X-ray obscured Narrow Line Seyfert 1 Ga…
A strong excess in the 20-100 keV emission of NGC 1365
G. Risaliti, V. Braito, V. Laparola +8
We present a new Suzaku observation of the obscured AGN in NGC 1365, revealing an unexpected excess of X-rays above 20 keV of at least a factor ~2 with respect to the extrapolation…
Unabsorbed Seyfert 2 galaxies: the case of "naked" AGN
F. Panessa, F. J. Carrera, S. Bianchi +6
Hawkins (2004) reported on a class of "naked" AGN characterized by strong amplitude optical brightness variability and the complete absence of broad emission lines in the optical s…