SUZAKU VIEW OF THE SWIFT/BAT ACTIVE GALACTIC NUCLEI. V. TORUS STRUCTURE OF TWO LUMINOUS RADIO-LOUD ACTIVE GALACTIC NUCLEI (3C 206 AND PKS 0707−35)
SUZAKU VIEW OF THE SWIFT/BAT ACTIVE GALACTIC NUCLEI. V. TORUS STRUCTURE OF TWO LUMINOUS RADIO-LOUD ACTIVE GALACTIC NUCLEI (3C 206 AND PKS 0707−35)
复制标题
DOI：
10.1088/0004-637x/772/1/38
复制
发表时间：
2013-05
期刊：
影响因子：
--
通讯作者：
F. Tazaki;Y. Ueda;Y. Terashima;R. Mushotzky;F. Tombesi
中科院分区：
文献类型：
--
作者：
F. Tazaki;Y. Ueda;Y. Terashima;R. Mushotzky;F. Tombesi
本文给出了3C206和PKS0707−35的宽带X射线能谱分析结果，它们分别是硬X射线光度为1045.5 erg S−1和1044.9 erg S−1(14-195keV)的最亮、未遮挡和遮蔽射电响亮活动星系核。根据射电核心光度，我们估计3C206的X射线谱包含来自喷流的显著贡献(在14-195keV波段∼为60%)，而在PKS0707−35中可以忽略不计。我们可以成功地用喷流分量(对于3C206)、透射光发射以及来自环面和吸积盘的两个反射分量来模拟光谱。3C206和PKS0707Seyfert星系的环面反射强度分别为Rtorus(≡Ω/2π)=0.2 9±0.18和0.41±0.18，均小于典型的−星系。利用池田等人的环面模型，我们量化了环面的半开口角(θoA)与铁-K线的等效宽度之间的关系。假定观测到的等效宽度为3C206，80°IF=1024 cm−2。PKS0707−35，72±36 eV，与∼1023 cm−2相一致。我们的结果表明，发光性射电活动星系核的环面发育较差。这一趋势类似于在无线电静默活动星系核中看到的，这意味着环状结构在有喷流和没有喷流的活动星系核之间没有什么不同。
We present the results from broadband X-ray spectral analysis of 3C 206 and PKS 0707−35 with Suzaku and Swift/BAT, two of the most luminous unobscured and obscured radio-loud active galactic nuclei (AGNs) with hard X-ray luminosities of 1045.5 erg s−1 and 1044.9 erg s−1 (14–195 keV), respectively. Based on the radio core luminosity, we estimate that the X-ray spectrum of 3C 206 contains a significant (∼60% in the 14–195 keV band) contribution from the jet, while it is negligible in PKS 0707−35. We can successfully model the spectra with the jet component (for 3C 206), the transmitted emission, and two reflection components from the torus and the accretion disk. The reflection strengths from the torus are found to be Rtorus(≡ Ω/2π) = 0.29 ± 0.18 and 0.41 ± 0.18 for 3C 206 and PKS 0707−35, respectively, which are smaller than those in typical Seyfert galaxies. Utilizing the torus model by Ikeda et al., we quantify the relation between the half-opening angle of a torus (θoa) and the equivalent width of an iron-K line. The observed equivalent width of 3C 206, 80° if =1024 cm−2 is assumed. That of PKS 0707−35, 72 ± 36 eV, is consistent with ∼1023 cm−2. Our results suggest that the tori in luminous radio-loud AGNs are only poorly developed. The trend is similar to that seen in radio-quiet AGNs, implying that the torus structure is not different between AGNs with jets and without jets.