IGR J16547-1916/1RXS J165443.5-191620 -- a New Intermediate Polar from the INTEGRAL Galactic Survey

Details IGR J16547-1916/1RXS J165443.5-191620 -- a New Intermediate Polar from the INTEGRAL Galactic Survey IGR J16547-1916/1RXS J165443.5-191620 -- a New Intermediate Polar from the INTEGRAL Galactic Survey

2010-11-04

arxiv.org/abs/1011.1129v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

10 pages, 4 figures, will be published in Astronomy Letters, V.36, N12, PP.904-909, 2010

Scientific paper

We present the results of our optical identification of the X-ray source IGR J16547-1916 detected by the INTEGRAL observatory during a deep all-sky survey. Analysis of the spectroscopic data from the SWIFT and INTEGRAL observatories in the X-ray energy band and from the BTA (Special Astrophysical Observatory) telescope in the optical band has shown that the source is most likely an intermediate polar -- an accreting white dwarf with the mass of M~0.85 M_Sun in a low-mass binary system. Subsequent studies of the object's rapid variability with the RTT-150 telescope have confirmed this conclusion by revealing periodic pulsations of its optical emission with a period of ~550 s.

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