SIMBAD references

2013ApJ...778...45C - Astrophys. J., 778, 45 (2013/November-3)

Superorbital periodic modulation in wind-accretion high-mass X-ray binaries from Swift burst alert telescope observations.


Abstract (from CDS):

We report the discovery using data from the Swift-Burst Alert Telescope (BAT) of superorbital modulation in the wind-accretion supergiant high-mass X-ray binaries 4U 1909+07 (= X 1908+075), IGR J16418-4532, and IGR J16479-4514. Together with already known superorbital periodicities in 2S 0114+650 and IGR J16493-4348, the systems exhibit a monotonic relationship between superorbital and orbital periods. These systems include both supergiant fast X-ray transients and classical supergiant systems, and have a range of inclination angles. This suggests an underlying physical mechanism which is connected to the orbital period. In addition to these sources with clear detections of superorbital periods, IGR J16393-4643 (= AX J16390.4-4642) is identified as a system that may have superorbital modulation due to the coincidence of low-amplitude peaks in power spectra derived from BAT, Rossi X-Ray Timing Explorer Proportional Counter Array, and International Gamma-Ray Astrophysics Laboratory light curves. 1E 1145.1-6141 may also be worthy of further attention due to the amount of low-frequency modulation of its light curve. However, we find that the presence of superorbital modulation is not a universal feature of wind-accretion supergiant X-ray binaries.

Abstract Copyright:

Journal keyword(s): stars: individual (2S 0114+650, 1E 1145.1-6141, IGR J16393-4643, IGR J16418-4532, IGR J16479-4514) - stars: neutron - X-rays: stars

Simbad objects: 14

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