A search for X-ray absorbed sources in the 3XMM catalogue, using photometric redshifts and Bayesian spectral fits

no code implementations • 12 Nov 2020 • A. Ruiz, I. Georgantopoulos, A. Corral

Here, we present XMMFITCAT-Z: a spectral fit catalogue for these sources using the Bayesian X-ray Analysis (BXA) technique.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena

Estimating Photometric Redshifts for X-ray sources in the X-ATLAS field, using machine-learning techniques

no code implementations • 3 Oct 2017 • G. Mountrichas, A. Corral, V. A. Masoura, I. Georgantopoulos, A. Ruiz, A. Georgakakis, F. J. Carrera, S. Fotopoulou

In particular, our measurements show that the estimated photometric redshifts for the X-ray sources of the training sample, have a normalized absolute median deviation, n_mad=0. 06, and the percentage of outliers, eta=10-14 percent, depending on whether the sources are extended or point-like.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics