Friday, July 20, 2012

1207.4557 (E. Bozzo et al.)

IGRJ18179-1621: an obscured X-ray pulsar discovered by INTEGRAL    [PDF]

E. Bozzo, C. Ferrigno, M. Tuerler, A. Manousakis, M. Falanga
We report on all the INTEGRAL and Swift data collected during the first outburst observed from IGRJ18179-1621. The broad-band spectral analysis showed that the X-ray emission from the source is heavily absorbed (N_H~10^23 cm^-2), and well described by a flat power-law with a high energy rollover (cutoff energy 9-12 keV, e-folding energy 4-7 keV). We found some evidence of a cyclotron absorption feature at 22\pm1 keV. Together with the pulsations at 11.8s discovered in the XRT data, this evidence would suggest that IGRJ18179-1621 is an obscured magnetized accreting neutron star, possibly part of a supergiant high mass X-ray binary or a Be X-ray binary system.
View original: http://arxiv.org/abs/1207.4557

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