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A High Resolution View of the Warm Absorber in the Quasar MR2251-178
J. N. Reeves, D. Porquet, V. Braito +5
High resolution X-ray spectroscopy of the warm absorber in the nearby quasar, MR2251-178 (z = 0.06398) is presented. The observations were carried out in 2011 using the Chandra Hig…
Using the Bright Ultra-Hard XMM-Newton Survey to define an IR selection of luminous AGN based on WISE colours
S. Mateos, A. Alonso-Herrero, F. J. Carrera +7
We present a highly complete and reliable mid-infrared (MIR) colour selection of luminous AGN candidates using the 3.4, 4.6, and 12 um bands of the WISE survey. The MIR colour wedg…
Observations of Outflowing UV Absorbers in NGC 4051 with the Cosmic Origins Spectrograph
S. B. Kraemer, D. M. Crenshaw, J. P. Dunn +6
We present new Hubble Space Telescope (HST)/Cosmic Origins Spectrograph observations of the Narrow-Line Seyfert 1 galaxy NGC 4051. These data were obtained as part of a coordinated…
NGC454: unveiling a new "changing look" AGN
Elena Marchese, Valentina Braito, Roberto Della Ceca +2
We present a detailed analysis of the X-ray spectrum of the Seyfert 2 galaxy NGC454E, belonging to the interacting system NGC454. Observations performed with Suzaku, XMM-Newton and…
Suzaku observation of the LINER NGC 4102
O. Gonzalez-Martin, I. Papadakis, V. Braito +11
Low ionisation nuclear emission-line region (LINER) nuclei have been claimed to be different than other active galactic nuclei (AGN) due to the presence of complex absorbing struct…
Suzaku and SWIFT-BAT observations of a newly discovered Compton-thick AGN
P. Severgnini, A. Caccianiga, R. Della Ceca +4
Obscured AGN are fundamental to understand the history of Super Massive Black Hole growth and their influence on galaxy formation. However, the Compton-thick AGN (NH>1e24 cm^-2) po…
Significant X-ray Line Emission in the 5-6 keV band of NGC 4051
T. J. Turner, L. Miller, J. N. Reeves +4
A Suzaku X-ray observation of NGC 4051 taken during 2005 Nov reveals line emission at 5.44 keV in the rest-frame of the galaxy which does not have an obvious origin in known rest-f…
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…
Variable partial covering and a relativistic iron line in NGC 1365
G. Risaliti, G. Miniutti, G. Fabbiano +8
We present a complete analysis of the hard X-ray (2-10 keV) properties of the Seyfert galaxy NGC 1365, based on a 60 ks XMM-Newton observation performed in January 2004. The two ma…