期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 854, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8213/aaaae1
关键词
black hole physics; galaxies: active; quasars: individual (PDS 456); X-rays: galaxies
资金
- STFC [ST/K001000/1]
- EU [664931]
- ESA Member States
- NASA
- [NNX17AC38G]
- [NNX17AD56G]
- [HST-GO-14477.001-A]
Past X-ray observations of the nearby luminous quasar PDS 456 (at z = 0.184) have revealed a wide angle accretion disk wind, with an outflow velocity of similar to-0.25c. Here, we unveil a new, relativistic component of the wind through hard X-ray observations with NuSTAR and XMM-Newton, obtained in 2017 March when the quasar was in a low-flux state. This very fast wind component, with an outflow velocity of -0.46 +/- 0.02c, is detected in the iron K band, in addition to the -0.25c wind zone. The relativistic component may arise from the innermost disk wind, launched from close to the black hole at a radius of similar to 10 gravitational radii. The opacity of the fast wind also increases during a possible obscuration event lasting for 50 ks. We suggest that the very fast wind may only be apparent during the lowest X-ray flux states of PDS 456, becoming overly ionized as the luminosity increases. Overall, the total wind power may even approach the Eddington value.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据