论文标题
绕行AGN样品的宽线区域云
Broad-line Region Clouds orbiting an AGN sample
论文作者
论文摘要
我们提供了来自六个星系样本的XMM-Newton数据的光谱和时间分析（NGC 3783，MRK 279，MRK 766，NGC 3227，NGC 7314和NGC 3516）。使用硬度比率曲线，我们确定云中的云中的五个来源中的五个中央X射线源。我们在NGC 3227中检测到三个掩体，并在NGC 3783，NGC 7314和NGC 3516中检测到1个仿生，以及MRK 766中众所周知的掩盖。我们估计了覆盖云的物理特性。 X射线源的派生物理大小（$ \ sim $（3-28）$ \ times $ 10 $^{13} $ cm）少于带有圆柱密度为$ \ sim $ 10 $ 10 $^{22} $ 10 $^{22} $ -10 $ -10 $^{23} $ cm $ cm $^{ - 2} $ sings for x x的云密度的云云的云云密度的x-ray x-ray x-ray x-ray x-ray x-ray x， X射线通量。 MRK 766，NGC 3227，NGC 7314和NGC 3516中的黯淡云，与X射线源的$ \ sim $（0.3-3.6）$（0.3-3.6）$ \ times $ 10 $^4 $ $ $ $ $ $ r_g的距离距离NGC 3783中的云云可能位于尘土飞扬的圆环中。我们还发现了一个很好的反相关，坡度为-187美元$ \ pm $ 62 $ 62在星系中心的已知质量黑洞之间，五个seyfert 1 seyfert 1 seyfert 1 seyfert 1 seyfert 2 eyfert 2 eyfert 2 eyfert ngc ng ewc ngc ewc ngc ngc ngc 7314的6.4 kev fe线的等效宽度（ew）均为100 ngc ngc ngciand ngc ngc ngc an与上述抗相关。
We present a spectral and temporal analysis of XMM-Newton data from a sample of six galaxies (NGC 3783, Mrk 279, Mrk 766, NGC 3227, NGC 7314, and NGC 3516). Using the hardness-ratio curves, we identify time-intervals in which clouds are eclipsing the central X-ray source in five of the six sources. We detect three occultations in NGC 3227 and one occultation in NGC 3783, NGC 7314, and NGC 3516, together with the well-known occultations in Mrk 766. We estimate the physical properties of the eclipsing clouds. The derived physical size of the X-ray sources ($\sim$(3-28)$\times$10$^{13}$ cm) is less than that of the eclipsing clouds with column densities of $\sim$10$^{22}$-10$^{23}$ cm$^{-2}$, thus a single cloud may block the X-ray source, leading to notorious temporal variability of the X-ray flux. The eclipsing clouds in Mrk 766, NGC 3227, NGC 7314, and NGC 3516 with distances from the X-ray source of $\sim$(0.3-3.6)$\times$10$^4$ $R_g$ are moving at Keplerian velocities $>$1122 km s$^{-1}$, typical parameters of broad-line region clouds, while the eclipsing cloud in NGC 3783 is likely located in the dusty torus. We also find a good anti-correlation with a slope of -187$\pm$62 between the known masses of the supermassive black hole in the center of the galaxies with the equivalent width (EW) of the 6.4 keV Fe line for the five Seyfert 1 galaxies of our sample, while the Seyfert 2 galaxy NGC 7314 shows an average EW value of 100$\pm$11 eV inconsistent with the above anti-correlation.
