论文标题
Nustar和XMM-Newton揭示的ESO 511 $ -G030中的低温电晕
The Low Temperature Corona in ESO 511$-$G030 Revealed by NuSTAR and XMM-Newton
论文作者
论文摘要
我们介绍了Seyfert 1 Galaxy ESO 511 $ -G030的协调XMM-NEWTON $+$ NUSTAR观察的结果。通过此联合监测计划，我们进行了详细的可变性和光谱分析。在整个观察期间，源源保持较低且非常稳定的状态，尽管长时间尺度上的通量有轻微的波动。宽带（0.3-78〜KEV）频谱显示了幂律连续体的存在，其柔软过剩以下，相对较窄的铁K $α$发射（$ \ sim $ 6.4〜keV）以及在高能量时明显的截止值。我们发现，柔软的过剩可以通过两种不同的情况来建模：温暖（$ kt _ {\ rm e} \ sim $ 0.19〜keV）和光学厚（$τ-18 \ sim25 $）构成电晕或相对论的重新构成高密度（$ \ log [$ \ log [n _ _ _ _ {\ rm e}/ cm}^{ - 3}] = 17.1 \ sim 18.5 $）内光盘。所有型号都需要低温（$ kt _ {\ rm e} \ sim $ 13〜KEV）。
We present the results from a coordinated XMM-Newton $+$ NuSTAR observation of the Seyfert 1 Galaxy ESO 511$-$G030. With this joint monitoring programme, we conduct a detailed variability and spectral analysis. The source remained in a low flux and very stable state throughout the observation period, although there are slight fluctuations of flux over long timescales. The broadband (0.3-78~keV) spectrum shows the presence of a power-law continuum with a soft excess below 2~keV, a relatively narrow iron K$α$ emission ($\sim$6.4~keV), and an obvious cutoff at high energies. We find that the soft excess can be modeled by two different possible scenarios: a warm ($kT_{\rm e} \sim$ 0.19~keV) and optically thick ($τ- 18\sim25$) Comptonizing corona or a relativistic reflection from a high-density ($\log [n_{\rm e}/{\rm cm}^{-3}]=17.1 \sim 18.5$) inner disc. All models require a low temperature ($kT_{\rm e} \sim$ 13~keV) for the hot corona.
