A Compton-thick nucleus in the dual active galactic nuclei of Mrk 266
A Compton-thick nucleus in the dual active galactic nuclei of Mrk 266
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DOI：
10.1051/0004-6361/202038513
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发表时间：
2020-07
影响因子：
6.5
通讯作者：
K. Iwasawa;C. Ricci;G. Privon;N. Torres-Albà;H. Inami;V. Charmandaris;A. Evans;J. Mazzarella;T. D'iaz-Santos
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作者：
K. Iwasawa;C. Ricci;G. Privon;N. Torres-Albà;H. Inami;V. Charmandaris;A. Evans;J. Mazzarella;T. D'iaz-Santos
本文介绍了我们对Mrk 266发光红外星系的核星数据的分析结果，该星系包含两个核，西南（SW）和东北（NE），这两个核在之前的钱德拉成像中被分辨出来。结合钱德拉的数据，我们将NuSTAR观测获得的硬x射线光谱解释为来自SW核中康普顿厚活动星系核（AGN）的急剧上升的通量，这在钱德拉波段中非常微弱，证实了之前的说法。这种硬x射线成分主要由反射组成，其固有的2-10 keV光度可能为~ 1 × 1043 erg s−1。虽然它在软x射线中是明亮的，但只有适度吸收的NE核具有2-10 keV的亮度，为4 × 1041 erg s−1，使其处于低光度AGN类。这些结果对于理解在严重模糊的合并中双AGN发射的可探测性和占空比具有重要意义。
We present the results from our analysis of NuSTAR data of the luminous infrared galaxy Mrk 266, which contains two nuclei, south-western (SW) and north-eastern (NE), which were resolved in previous Chandra imaging. Combining this with the Chandra data, we intepret the hard X-ray spectrum obtained from a NuSTAR observation to result from a steeply rising flux from a Compton-thick active galactic nuclei (AGN) in the SW nucleus which is very faint in the Chandra band, confirming the previous claim. This hard X-ray component is dominated by reflection, and its intrinsic 2–10 keV luminosity is likely to be ∼1 × 1043 erg s−1. Although it is bright in soft X-ray, only a moderately absorbed NE nucleus has a 2–10 keV luminosity of 4 × 1041 erg s−1, placing it in the low-luminosity AGN class. These results have implications for understanding the detectability and duty cycles of emission from dual AGN in heavily obscured mergers.