SUPERORBITAL PERIODIC MODULATION IN WIND-ACCRETION HIGH-MASS X-RAY BINARIES FROM SWIFT BURST ALERT TELESCOPE OBSERVATIONS

被引：51

作者：

Corbet, Robin H. D. ^{[1
,2
]}

Krimm, Hans A. ^{[3
,4
]}

机构：

[1] Univ Maryland Baltimore Cty, Baltimore, MD 21250 USA

[2] NASA, Goddard Space Flight Ctr, CRESST Mail Code 662, Xray Astrophys Lab, Greenbelt, MD 20771 USA

[3] Univ Space Res Assoc, Columbia, MD 21044 USA

[4] NASA, Goddard Space Flight Ctr, CRESST Mail Code 661, Astroparticle Phys Lab, Greenbelt, MD 20771 USA

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 778卷 / 01期

关键词：

stars:; individual; (2S; 0114+650; 1E; 1145.1-6141; IGR J16393-4643; IGR J16418-4532; IGR J16479-4514); stars: neutron; X-rays: stars; PULSAR; 1E; 1145.1-6141; UNEVENLY SPACED DATA; TIME-SERIES ANALYSIS; ALL-SKY MONITOR; IGR J16418-4532; TIMING-EXPLORER; ORBITAL PERIOD; 2S 0114+650; XMM-NEWTON; MULTIWAVELENGTH OBSERVATIONS;

D O I：

10.1088/0004-637X/778/1/45

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：11

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