Discovery of a 30-d period in the supergiant fast X-ray transient SAX J1818.6-1703

被引：29

作者：

Bird, A. J. ^{[1
]}

Bazzano, A. ^{[2
]}

Hill, A. B. ^{[1
]}

McBride, V. A. ^{[1
]}

Sguera, V. ^{[3
]}

Shaw, S. E. ^{[1
]}

Watkins, H. J. ^{[1
]}

机构：

[1] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England

[2] INAF IASF, I-00133 Rome, Italy

[3] INAF IASF, Bologna, Italy

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2009年 / 393卷 / 01期

关键词：

gamma-rays: observations; X-rays: binaries; X-rays: individual: SAX J1818.6-1703; CLUMPY STELLAR WINDS; UNEVENLY SPACED DATA; TIME-SERIES ANALYSIS; IGR J11215-5952; OUTBURST; BINARIES;

D O I：

10.1111/j.1745-3933.2008.00583.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

SAX J1818.6-1703 has been characterized as a supergiant fast X-ray transient system on the basis of several INTEGRAL/IBIS detections since the original BeppoSAX Wide Field Camera detection. Using IBIS/ISGRI, Swift/BAT and archival observations, we show that, in fact, SAX J1818.6-1703 exhibits emission on a period of 30 +/- 0.1 d, with a high degree of recurrence. SAX J1818.6-1703 is therefore the second supergiant fast X-ray transient shown to exhibit periodic outbursts, but with a considerably shorter period than the other known system, IGR J11215-5952.

引用

页码：L11 / L15

页数：5

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