Swift Detection of 11.82 s Pulsations from IGR J18179-1621

Details Swift Detection of 11.82 s Pulsations from IGR J18179-1621 Swift Detection of 11.82 s Pulsations from IGR J18179-1621

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012atel.3949....1h&link_type=abstract

The Astronomer's Telegram, #3949

Astronomy and Astrophysics

Astronomy

X-Ray, Binary, Neutron Star, Transient, Pulsar

Scientific paper

Examining Swift XRT observations of the location of the new hard X-ray transient IGR J18179-1621 (Tuerler et al., ATel #3947) taken on 2012 February 29 - March 1 UT (MJD 55986.84-55987.67) for a total exposure time of 3800 s, I find a source at R.A. = 18h17m51.9s, decl. = -16d21'31" (J2000.0) with 0.80 counts/s in the 2-10 keV range, and cut off below 2 keV. Fourier analysis shows a strong signal at P=11.82(1) s, with a single-peaked pulse and a pulsed fraction of 27%.

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