A study of the new X-ray transient RXTE J2123-058 during its post-outburst state

被引：8

作者：

Soria, R ^{[1
]}

Wu, K

Galloway, DK

机构：

[1] Australian Natl Univ, Res Sch Astron & Astrophys, Weston Creek PO, ACT 2611, Australia

[2] Univ Sydney, Sch Phys, Res Ctr Theoret Astrophys, Sydney, NSW 2006, Australia

[3] Univ Tasmania, Dept Phys, Hobart, Tas 7001, Australia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1999年 / 309卷 / 02期

关键词：

accretion; accretion discs; binaries : close; stars : individual : RXTE J2123-058; stars : neutron; X-rays : stars;

D O I：

10.1046/j.1365-8711.1999.02861.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We carried out I, R, V and B photometric observations of the neutron star X-ray binary RXTE J2123-058 shortly after the end of the X-ray outburst in mid-1998. We adopt the low-mass binary model to interpret our observations. After folding our data on the 0.24 821-d orbital period, and correcting for the steady brightness decline following the outburst, we observed sinusoidal oscillations with hints of ellipsoidal modulations which became progressively more evident. Our data also show that the decline in brightness was faster in the V band than in the R and I bands. This suggests both the cooling of an irradiation-heated secondary star and the fading of an accretion disc over the nights of our observations.

引用

页码：528 / 532

页数：5

共 15 条

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