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Estudio de fuentes de rayos X asociadas a la fuente de rayos γ no identificada 2FGL J0534.8-0548
(Asociación Argentina de Astronomía, 2016)
In this paper, we present a preliminary study of four point-like X-ray sources detected with XMM-Newton. Three of them lie within the ellipse corresponding to the 95 confidence contour of the unidentified -ray source 2FGL ...
Unveiling the nature of INTEGRAL objects through optical spectroscopy. VIII. Identification of 44 newly detected hard X-ray sources
(2010)
Hard X-ray surveys performed by the INTEGRAL satellite have discovered a conspicuous fraction (up to 30%) of unidentified objects among the detected sources. Here we continue our program of identification of these objects ...
FINDING FOSSIL GROUPS: OPTICAL IDENTIFICATION AND X-RAY CONFIRMATION
(IOP PUBLISHING LTDBRISTOL, 2012)
We report the discovery of 12 new fossil groups (FGs) of galaxies, systems dominated by a single giant elliptical galaxy and cluster-scale gravitational potential, but lacking the population of bright galaxies typically ...
Classification and environmental properties of X-ray selected point-like sources in the XMM-LSS field⋆
(Astronomy & Astrophysics, 2013)