Orbital X-ray modulation study of three Supergiant HMXBs

Abstract

We present the orbital X-ray modulation study of three high mass X- ray binary systems, IGR J18027-2016, IGR J18483-0311 and IGR J16318-4848 using data obtained with RXTE-ASM, Swift-BAT and INTEGRAL-ISGRI. Using the long term light curves of the eclipsing HMXB IGR J18027-2016, obtained with Swift-BAT in the energy range 15-50 keV and INTEGRAL-ISGRI in the energy range 22-40 keV, we have determined three new mid eclipse times. The newly determined mid eclipse times together with the known values were used to derive an accurate value of the orbital period of 4.5693(4) d at MJD 52168 and an upper limit of 3.9(1.2)x10^-7 d d^-1 on the period derivative. We have also accurately determined an orbital period of 18.5482(88) d for the intermediate system IGR J18483-0311, which displays an unusual behaviour and shares many properties with the known SFXTs and persistent supergiant systems. This is a transient source and the outbursts occur intermittently at intervals of 18.55 d. Similarly, in the third supergiant system, IGR J16318-4848, we have found that the outbursts are separated by intervals of 80 d or its multiples, suggesting a possible orbital period.

17 pages, 14 figures, accepted for publication in Research in Astronomy and Astrophysics

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Cited by in corpus (11)

• The ephemeris, orbital decay, and masses of 10 eclipsing HMXBs
• Advances in Understanding High-Mass X-ray Binaries with INTEGRAL and Future Directions
• An INTEGRAL overview of High Mass X-ray Binaries: classes or transitions?
• An Extended and More Sensitive Search for Periodicities in RXTE/ASM X-ray Light Curves
• X-ray reprocessing: Through the eclipse spectra of high mass X-ray binaries with XMM-Newton
• Glimpse of the highly obscured HMXB IGR J16318-4848 with Hitomi
• Orbital variations in intensity and spectral properties of the highly obscured sgHMXB IGR J16318-4848
• Probing clumpy wind accretion in IGR J18027-2016 with XMM-Newton
• Optical and infrared study of the obscured B[e] supergiant high-mass X-ray binary IGR J16318-4848
• Variability study of the High Mass X-ray Binary IGR J18027--2016 with {\it Swift}--XRT
• Change in spin-down rate and detection of emission line in HMXB 4U 2206+54 with AstroSat observation