IGR J 16393 − 4643 : a new heavily - obscured X - ray pulsar
نویسندگان
چکیده
An analysis of the high-energy emission from IGR J16393−4643 (=AX J1639.0−4642) is presented using data from INTEGRAL and XMM-Newton. The source is persistent in the 20–40 keV band at an average flux of 5.1 × 10 −11 ergs cm −2 s −1 , with variations in intensity by at least an order of magnitude. A pulse period of 912.0±0.1 s was discovered in the ISGRI and EPIC light curves. The source spectrum is a strongly-absorbed (N H = (2.5 ± 0.2) × 10 23 cm −2) power law that features a high-energy cutoff above 10 keV. Two iron emission lines at 6.4 and 7.1 keV, an iron absorption edge 7.
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