66 citations · 177 across the 15 of their papers we have counts for
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The unusual UV continuum of quasar Ton 34 and the possibility of crystalline dust absorption
Luc Binette, Yair Krongold
Luminous quasars are known to display a sharp steepening of the continuum near 1100A. This spectral feature is not well fitted by current accretion disk models, unless comptonizati…
X-ray properties of a sample of polar-scattered Seyfert galaxies
E. Jimenez-Bailon, M. Guainazzi, G. Matt +5
We present the results on an XMM-Newton systematic analysis of a sample of nine Seyfert 1 galaxies. When observed in polarised light, the spectra of the selected sources are simila…
The emission line spectrum of the UV deficient quasar Ton 34: evidence of shock excitation?
Luc Binette, Yair Krongold
Emission lines in quasars are believed to originate from a photoionized plasma. There are, however, some emission features which appear to be collisionally excited, such as the FeI…
The Nature of the Far-UV Break in the Energy Distribution of Quasars
L. Binette, S. Haro-Corzo, Y. Krongold +1
A prominent continuum steepening is observed in quasar energy distributions near 1100A. We review possible interpretations for the physical origin of this so-called far-UV break.
Time-Evolving Photoionization: the Thin and Compact X-Ray Wind of NGC 4051
Fabrizio Nicastro, Yair Krongold, Martin Elvis +3
We discuss the power of time-evolving photoionization as a diagnostic tool to measure the electron density of photoionized gas. We apply this technique to a XMM-Newton observation…