The Properties of the Absorbing and Line Emitting Material in IGR J16318-4848

Details The Properties of the Absorbing and Line Emitting Material in IGR J16318-4848 The Properties of the Absorbing and Line Emitting Material in IGR J16318-4848

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005chjas...5...99m&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 5 Supplement, p. 99-103

Astronomy and Astrophysics

Astrophysics

Line: Formation, X-Rays: Binaries, X-Rays: Individual: Igr J16318-4818

Scientific paper

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.

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