Swift/BAT and RXTE/ASM Discovery of the Orbital Period of IGR J16418-4532
Abstract
The Swift Burst Alert Telescope (BAT) light curve of IGR J16418-4532 (Tomsick et al. 2004 ATEL #224) obtained between 2004 Dec 21 and 2005 Sep 17 shows modulation at a period near 3.75 days. This period is confirmed and refined by observations made with the Rossi X-ray Timing Explorer All-Sky Monitor (ASM) between 1996 Jan 9 and 2006 March 16. The mean BAT count rate of IGR J16418-4532 in the range 14 - 195 keV is 9.5 (+/- 0.9 statistical) E-4 counts/s/cm^2 which corresponds to approximately 3 mCrab.
- Publication:
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The Astronomer's Telegram
- Pub Date:
- March 2006
- Bibcode:
- 2006ATel..779....1C
- Keywords:
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- X-ray;
- Gamma Ray;
- Binaries;
- Neutron Stars;
- Pulsars;
- Stars