A detailed X-ray Soft Excess of the narrow-line Seyfert-1 galaxy Tonantzintla S180 (Ton s180) present. The study used four XMM-Newton observations for period from the year 2000 to the year 2016 taken from the XMM-Newton archive. Two different models were used to treat the X-ray Soft Excess for each data separately, the first model is power law component and the second one is two black body components. We found that, for all observations, the spectra fitted by using a power law component are poor and the output parameters much different from the previous studies, this model unsuccessfully reproduces the continuum shape of the spectrum, including the soft excess, of all observations (Nh = 3.62 +-1020 cm^{-2} and photon index for the hard and soft bands are 3.31 and 1.57). The study proved that it can rely upon the two black body components in treating X-ray Soft Excess of the narrow-line Seyfert-1 galaxy (Nh= 1.395 +- 10^20 cm^{-2} and The temperature of the two black-body components (KT) are 0.075 and 0.17 keV).
Probing the Physics of Narrow Line Regions in Active Galaxies IV: Full data release of The Siding Spring Southern Seyfert Spectroscopic Snapshot Survey (S7)
Investigating the reflection contribution to the X-ray emission of Ton S180
现在有越来越多的证据表明,软X射线过剩几乎是无处不在的未被遮蔽的活动星系。尽管在过去的几年中已经考虑了各种解释,但这一最重要的光谱特征的性质尚未得到确定。在这种情况下,我们审查从反射的角度来看,三个最高质量的X射线观测的窄线塞弗特1星系Tonantzintla S180,获得XMM牛顿和朱雀。Ton S 180的X射线谱在几年的时间跨度内只显示出适度的变化,这表明相同的物理过程在不同的时期占了宽带X射线发射的大部分,并且X射线源的属性是相当稳定的。我们已经成功地应用在我们的光谱分析的双反射镜模型,由两个独立的组件:一个来自表面的吸积盘,是高度电离和相对论效应模糊;另一个是冷的,相当微弱,可以与一个遥远的后处理器。由于其软过量发射的强度和接近幂律的形状,Ton S180是测试X射线反射场景的最具挑战性的源之一。在这项工作中,我们提供了一个清晰的说明模糊反射模型的巨大潜力和光谱的灵活性,同时讨论了他们目前的一些限制和可能的缺点。
Anomalous narrow line Seyfert I galaxies from SDSS DR17
Indian Institute of Astrophysics(印度天体物理研究所);Joint Astronomy Programme, Department of Physics, Indian Institute of Science(印度科学学院物理系联合天文学项目);Aryabhatta Research Institute of Observational Sciences(阿耶波多观测科学研究所)
Fermi-LAT Detection of a Gamma-ray Excess toward the Radio-quiet Narrow-line Seyfert 1 Galaxy 1H 1934-063
Yunnan Observatories, Chinese Academy of Sciences(中国科学院云南天文台);School of Astronomy and Space Science, University of Chinese Academy of Sciences(中国科学院大学天文与空间科学学院);University of Chinese Academy of Sciences(中国科学院大学);Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences(中国科学院紫金山天文台暗物质与空间天文重点实验室);School of Astronomy and Space Science, University of Science and Technology of China(中国科学技术大学天文与空间科学学院)
Direct probe of the inner accretion flow around the supermassive black hole in NGC 2617
NGC 2617是一个邻近的($z\sim 0.01$)活跃星系,最近从塞弗特1.8转变为塞弗特1.0。与此同时,相对于档案测量,它的X射线通量大幅增加了一个数量级。为了研究外观变化的活动星系核(AGN)的物理性质,我们测量了NGC 2617的X射线光谱和时间特性。我们对间隔一个月的两个XMM-牛顿定点观测进行了全面的时间和谱分析,并辅以存档的准同步积分观测。我们发现,一阶,NGC 2617看起来像一个1型活动星系核的X射线波段,并增加了一个适度的反射组件,其连续可以建模以及与幂律加上一个唯象黑体,一个部分覆盖的幂律,或双康普顿模型。与所采用的连续体无关,在所有三种情况下,数据要求覆盖连续体源的20- 40%的中性气体的几个$10^{23}$ cm $^{-2}$的柱密度。最有趣的是,吸收结构,由于高度电离铁已被检测到在这两个观测与红移约$0.1c$相对于系统的主机星系的红移。红移的吸收体可以归因于失败的风/中止喷流组件,引力红移效应,和/或直接向中央超大质量黑洞下降的物质。无论哪种情况,我们都在探测NGC 2617中心超大质量黑洞周围最里面的吸积流,甚至可能观察到物质直接流入黑洞本身。