首页> 外文期刊>Nature >DYNAMICAL EVIDENCE FOR A BLACK HOLE IN THE ECLIPSING X-RAY NOVA GRO J1655-40
【24h】

DYNAMICAL EVIDENCE FOR A BLACK HOLE IN THE ECLIPSING X-RAY NOVA GRO J1655-40

机译:X射线NOVA GRO J1655-40中黑色洞口的动态证据

获取原文
获取原文并翻译 | 示例
           

摘要

X-RAY novae are binary systems in which a compact object accretes gas from a companion star. In several cases there is good evidence that the compact object is a black hole(1-5). The best evidence for the presence of a black hole comes from measuring the orbital velocity of the companion star and thereby determining the minimum mass of the compact object; when this mass exceeds the maximum mass for a neutron star (less than or similar to 3 solar masses(6)), a black hole seems the only remaining possibility. The unusual X-ray nova GRO J1655 - 40 (refs 7-10) is unique because it emits superluminal radio jets, suggesting that it is a low-luminosity counterpart to active galactic nuclei(7,9), which are thought to be powered by accretion onto a massive black hole. Here we report observations of the optical counterpart(10) of GRO J1655 - 40, which show that the system undergoes periodic eclipses; the edge-on geometry thus implied allows a determination of the companion star's true velocity. The mass of the compact object derived from the velocity curve is at least 3.16+/-0.15 solar masses, which strongly supports its identification as a black hole. [References: 22]
机译:X射线新星是双星系统,其中一个紧凑的物体从伴星中吸收气体。在某些情况下,有充分的证据表明,紧凑的物体是黑洞(1-5)。黑洞存在的最好证据来自测量伴星的轨道速度,从而确定了紧凑物体的最小质量。当该质量超过中子星的最大质量(小于或等于3个太阳质量(6))时,似乎只有黑洞存在。不寻常的X射线新星GRO J1655-40(refs 7-10)之所以独特,是因为它发射超光速射束,表明它与活动的银河核(7,9)相比具有低发光度,后者被认为是有动力的通过吸积到一个巨大的黑洞。在这里,我们报告了对GRO J1655-40的光学对应物(10)的观察,这些观察表明该系统经历了周期性的日蚀。因此隐含的边缘几何形状可以确定伴星的真实速度。从速度曲线得出的致密物体的质量至少为3.16 +/- 0.15太阳质量,这有力地支持了将其识别为黑洞。 [参考:22]

著录项

  • 来源
    《Nature》 |1995年第6553期|p. 157-159|共3页
  • 作者单位

    YALE UNIV DEPT ASTRON POB 208101 NEW HAVEN CT 06520 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

    Binary;

    机译:二元;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号