罗西X射线计时探测器

罗西X射线计时探测器
罗西X射线计时探测器的艺术图
基本资料
NSSDC ID1995-074A
组织机构NASA
发射日期1995年12月30日
发射地点卡纳维拉尔角
发射载体德尔塔II
质量3200 kg
轨道类型圆形轨道
轨道高度600 公里
轨道周期90 分钟
仪器
全天空监视器(ASM)能量范围:1.5 - 12 keV
正比计数器阵列(PCA)能量范围:2 - 60 keV
高能量X射线定时实验(HEXTE)能量范围:15 - 250 keV
网站RXTE home page

罗西X射线计时探测器(英語:Rossi X-ray Timing Explorer,缩写为RXTE)是美国宇航局于1995年12月30日发射的一颗X射线天文卫星,目的在于探测X射线源的快速光变。它的特点是不能成像,但是具有良好的时间分辨本领、较宽的波段和较大的接收面积。

罗西X射线计时探测器上携带的主要科学仪器有:

  • 正比计数器阵列(PCA),接受面积为6500平方厘米,能段范围2-60keV,时间分辨率达到了1微秒。
  • 高能X射线计时实验(HEXTE),接收面积为2×800平方厘米,能段范围15-250keV。
  • 全天监视器(ASM),能段范围2-10keV,灵敏度为30mCrab。

罗西X射线计时探测器在轨期间做出了一些列重要的发现,包括:发现了频率为千赫兹量级的准周期震荡;发现了X射线双星的自转周期;对天鹅座X-1的软X态暂现进行了观测;对伽玛射线暴的余辉进行了观测;观测到中等质量黑洞的候选天体M82 X-1[1]。利用罗西X射线计时探测器的观测资料,人们还可以检测广义相对论预言的黑洞附近存在的时空拖曳效应

探测器于2012年1月3日停止工作。[2]

参见

参考文献

  1. ^ P. Kaaret, M.G. Simet, C.C. Lang, The Orbital Period of the Ultraluminous X-ray Source in M82, Science 27 January 2006: Vol. 311. no. 5760, p. 491; Science Blog
  2. ^ 罗斯X射线计时探测器停止工作. 2012-01-12 [2012-01-12]. (原始内容存档于2011-10-16). 

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