Search Publications
X-ray Observations of the Very-Faint X-ray Transient XMMSL1 J171900.4-353217: A New Candidate Neutron Star Low-Mass X-ray Binary
Degenaar, N.; Wijnands, R.; Armas Padilla, M. +1 more
XMMSL1 J171900.4–353217 is a very-faint X-ray transient that was discovered in 2010 March when it exhibited an outburst. We report on 7 observations, obtained with the X-Ray Telescope (XRT) aboard the Neil Gehrels Swift Observatory between 2010 May and October. By fitting a single absorbed power-law model to the XRT spectra, we infer power-law ind…
X-ray Analysis of Seyfert 1 Galaxies with Optical Polarization: A Test for Unification Models
Guainazzi, M.; Jiménez-Bailón, E.; Longinotti, A. L. +3 more
In accordance with the AGN Unified Model, observed polarization can be related to the orientation of the line of sight with respect to the torus. AGN X-ray emission arises from the central region and carries the imprints of the obscuring material. We aim to test a unified scheme based on optical polarization using X-ray absorption. Using the XMM-N…