XTE J1739–302: An Unusual New X-Ray Transient
XTE J1739–302: An Unusual New X-Ray Transient
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XTE J1739–302：不寻常的新型 X 射线瞬变
DOI：
10.1086/311472
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
J. Heise
中科院分区：
文献类型：
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作者：
D. Smith;D. Main;F. Marshall;J. Swank;W. Heindl;M. Leventhal;J. Zand;J. Heise
在1997年8月12日的数据中，罗西x射线定时探测器上的比例计数器阵列发现了一个新的x射线瞬变，命名为XTE J1739-302。虽然它在活动期间是银河系中心区域最亮的光源（大约3.0×10−9尔格cm-2 s-1，从2到25 keV），但它只在那一天被观测到；9天前或2天后都无法检测到。在其他波长没有已知的对应物，而且它靠近银河系中心，由于源混淆和消光，将使这种识别变得困难。x射线光谱和强度表明，这是一颗Be/中子星双星的巨大爆发，尽管没有观测到脉动，而且爆发时间比这些系统的通常爆发时间短。
A new X-ray transient, designated XTE J1739-302, was discovered with the proportional counter array on the Rossi X-Ray Timing Explorer in data from 1997 August 12. Although it was the brightest source in the Galactic center region while active (about 3.0×10−9 ergs cm-2 s-1 from 2 to 25 keV), it was only observed on that one day; it was not detectable 9 days earlier or 2 days later. There is no known counterpart at other wavelengths, and its proximity to the Galactic center will make such an identification difficult due to source confusion and extinction. The X-ray spectrum and intensity suggest a giant outburst of a Be/neutron star binary, although no pulsations were observed and the outburst was shorter than is usual from these systems.