论文标题
双AGN系统MRK 739的宽带X射线光谱分析
Broadband X-ray Spectral Analysis of the Dual AGN System Mrk 739
论文作者
论文摘要
我们介绍了晚期混合物Galaxy MRK 739的宽带（0.5-70 KEV）X射线光谱分析，该分析包含一个双重活跃的银河核（AGN），MRK 739E和MRK 739W，分隔为$ \ sim $ 3.4 kpc。通过将两种AGN的贡献分离出来，并使用Chandra数据分离出贡献，并通过将贡献分离出来，并通过Chandra数据分开，用Nustar，Chandra，XMM-Newton和Swift/BAT获得的光谱进行了分析。为了评估AGN Tori的反射成分，我们考虑了两个模型，一种现象学的模型（Pexrav和Zgauss）和一个更具身体动机的模型（XClumpy; Tanimoto etal。2019）。根据XClumpy的结果，我们发现MRK 739E和MRK 739W中的AGN具有固有的2-10 KEV Luminosisition $ 1.0 \ times 10^{43} $，$ 7.5 \ times 10^{41} {41} {41} \ \ \ \ rm rm {erg {erg {erg {erg { $ n _ {\ rm {\ rm {h}} <6.5 \ times 10^{19} \ \ \ rm {cm}^{ - 2} $和$ n _ {\ rm { \ rm {cm}^{ - 2} $。用$ n _ {\ rm {\ rm {h}}> 10^{22} \ rm {cm}^{ - 2} $在mrk 739e中，$ c _ {\ rm {\ rm {t}}}^{（22}^（22} <0.50 $ limition）youll yoult your your yoult，覆盖了材料的部分的曲面。红外星系，$ c _ {\ rm {t}}}^{（22）} = 0.71 \ pm0.16 $（平均值和标准偏差; Yamada等人2021）。考虑到MRK 739E的小星形形成速率，我们建议宿主星系的气体与质量比是确定晚期合并中AGN环境环境的重要参数。
We present the result of a broadband (0.5-70 keV) X-ray spectral analysis of the late-merger galaxy Mrk 739, which contains a dual active galactic nucleus (AGN), Mrk 739E and Mrk 739W, with a separation of $\sim$3.4 kpc. The spectra obtained with NuSTAR, Chandra, XMM-Newton and Swift/BAT are simultaneously analyzed by separating the contributions from the two AGNs and extended emission with the Chandra data. To evaluate the reflection components from the AGN tori, we consider two models, a phenomenological one (pexrav and zgauss) and a more physically motivated one (XCLUMPY; Tanimoto et al. 2019). On the basis of the results with XCLUMPY, we find that the AGNs in Mrk 739E and Mrk 739W have intrinsic 2-10 keV luminosities of $1.0 \times 10^{43}$ and $7.5 \times 10^{41}\ \rm{erg}\ \rm{s}^{-1}$ absorbed by hydrogen column densities of $N_{\rm{H}} < 6.5 \times 10^{19}\ \rm{cm}^{-2}$ and $N_{\rm{H}} = 6.9^{+3.2}_{-1.7} \times 10^{21}\ \rm{cm}^{-2}$, respectively. The torus covering fraction of the material with $N_{\rm{H}} > 10^{22} \rm{cm}^{-2}$ in Mrk 739E, $C_{\rm{T}}^{(22)} < 0.50$ at a 90% confidence limit, is found to be smaller than those found for late-merger ultra/luminous infrared galaxies, $C_{\rm{T}}^{(22)} = 0.71\pm0.16$ (mean and standard deviation; Yamada et al. 2021). Considering the small star formation rate of Mrk 739E, we suggest that the gas-to-mass ratio of the host galaxy is an important parameter to determine the circumnuclear environment of an AGN in late merger.
