Abstract We analyzed the 2003 Target of Opportunity XMM–Newton observation of IGR J16318–4848, to derive the properties of the matter responsible for the obscuration and for the emission of Fe and Ni lines. The line of sight material has a column density of about 2×1024 cm-2 but, from the Fe Kα line EW and Compton Shoulder, we argue that the average column density is a few ×1023 cm-2, while the covering factor is about 0.1–0.2. The iron Kα line varies on time scales as short as 1000 s, implying a size of the emitting region less than 3×1013 cm. An ongoing XMM–Newton/INTEGRAL monitoring campaign is confirming the non–transient nature of the source.
null
It accepts original submissions from all over the world and is internationally published and distributed by IOP