A Hard Look at Relativistic Reverberation in MCG-5-23-16 and SWIFT J2127.4+5654: Testing the Lamppost Model
A Hard Look at Relativistic Reverberation in MCG-5-23-16 and SWIFT J2127.4+5654: Testing the Lamppost Model
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仔细研究 MCG-5-23-16 和 SWIFT J2127.4 5654 中的相对论混响：测试灯柱模型
DOI：
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发表时间：
2021
影响因子：
4.9
通讯作者：
E. Cackett
中科院分区：
文献类型：
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作者：
A. Zoghbi;J. Miller;E. Cackett
X射线反射映射是探测活动星系核吸积的一种新工具，它为黑洞尺度的吸积研究提供了一种潜在的强有力的手段。通常根据灯柱模型来解释滞后以及相对论光谱特征，沿着。特别侧重于测试相对论混响模型的预测，我们有针对性的几个最明亮的塞弗特星系的X射线与不同的观测计划。在这里，我们报告了两个大型活动的结果，其中努斯塔针对MCG-5-23-16和SWIFT J2127.4+5654，以测试3-50 keV波段的模型预测。这是三个来源中的两个，表明早期数据中有延迟康普顿峰的迹象。通过将先前分析的曝光量增加三倍，我们没有发现MCG-5-23-16中存在相对论性混响的证据，并且能量相关滞后与对数线性连续体一致。在SWIFT J2127.4+5654中，尽管仅连续模型解释了数据，但相对论混响模型对能量和频率相关滞后提供了显着改善，但参数与时间平均频谱不一致。这增加了越来越多的证据表明，滞后数据与静态灯柱模型不一致。
X-ray reverberation mapping has emerged as a new tool to probe accretion in active galactic nuclei (AGN), providing a potentially powerful probe of accretion at the black hole scale. The lags, along with relativistic spectral signatures are often interpreted in light of the lamppost model. Focusing specifically on testing the prediction of the relativistic reverberation model, we have targeted several of the brightest Seyfert Galaxies in X-rays with different observing programs. Here, we report the results from two large campaigns with NuSTAR targeting MCG-5-23-16 and SWIFT J2127.4+5654 to test the model predictions in the 3–50 keV band. These are two of three sources that showed indications of a delayed Compton hump in early data. With triple the previously analyzed exposures, we find no evidence for relativistic reverberation in MCG-5-23-16, and the energy-dependent lags are consistent with a log-linear continuum. In SWIFT J2127.4+5654, although a continuum-only model explains the data, the relativistic reverberation model provides a significant improvement to the energy and frequency-dependent lags, but with parameters that are not consistent with the time-averaged spectrum. This adds to mounting evidence showing that the lag data is not consistent with a static lamppost model.
影响因子：
14.1
作者：
Alston, William N.;Fabian, Andrew C.;Zogbhi, Abderahmen
通讯作者：
Zogbhi, Abderahmen