635 citations · 1.5k across the 12 of their papers we have counts for
12 papers
Resolving the X-ray obscuration in a low flux observation of the quasar PDS 456
James Reeves, Valentina Braito, Emanuele Nardini +5
Simultaneous XMM-Newton, NuSTAR and HST observations, performed in March 2017, of the nearby () luminous quasar PDS 456 are presented. PDS 456 had a low X-ray flux compare…
Measuring the Innermost Stable Circular Orbits of Supermassive Black Holes
G. Chartas, H. Krawczynski, L. Zalesky +4
We present a promising new technique, the g-distribution method, for measuring the inclination angle (i), the innermost stable circular orbit (ISCO), and the spin of a supermassive…
A deep look at the inner regions of the mini-BAL QSO PG 1126-041 with XMM-Newton
M. Giustini, M. Cappi, G. Chartas +3
A long XMM-Newton observation of the mini-BAL QSO PG 1126-041 allowed us to detect a highly ionized phase of X-ray absorbing gas outflowing at v~15000 km/s. Physical implications a…
Variable X-ray Absorption in mini-BAL QSOs
M. Giustini, M. Cappi, G. Chartas +3
We present the results of X-ray spectral analysis of two mini-BAL QSOs, PG 1126-041 and PG 1351+640, aimed at getting insights into the physics of quasar outflows. We find strong X…
Exploratory Study of the X-Ray Properties of Quasars With Intrinsic Narrow Absorption Lines
Toru Misawa, Michael Eracleous, George Chartas +1
We have used archival Chandra and XMM-Newton observations of quasars hosting intrinsic narrow UV absorption lines (intrinsic NALs) to carry out an exploratory survey of their X-ray…
The Chandra Deep Field North Survey. IX. Extended X-ray Sources
F. E. Bauer, D. M. Alexander, W. N. Brandt +8
The ~1 Ms Chandra Deep Field North observation is used to study the extended X-ray sources in the region surrounding the Hubble Deep Field North (HDF-N), yielding the most sensitiv…