期刊
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
卷 233, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4365/aa96ad
关键词
galaxies: active; galaxies: Seyfert; quasars: general; X-rays: diffuse background; X-rays: general
资金
- Chinese Academy of Sciences (CAS)
- CONICYT-Chile grants EMBIGGEN Anillo [ACT1101]
- FONDECYT [1141218, 1160999]
- Basal-CATA [PFB-06/2007]
- China-CONICYT fund
- Swiss National Science Foundation [PP00P2_138979, PP00P2_166159, 200021_157021]
- Swiss National Science Foundation (SNSF) through the Ambizione fellowship [PZ00P2 154799/1]
- National Key RAMP
- D Program of China [2016YFA0400702]
- National Science Foundation of China [11473002, 1721303]
- European Union's Seventh Framework program [337595]
- Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) [17K05384]
- National Aeronautics and Space Administration
- STFC [ST/J003697/2] Funding Source: UKRI
- Swiss National Science Foundation (SNF) [200021_157021] Funding Source: Swiss National Science Foundation (SNF)
- Grants-in-Aid for Scientific Research [17F17321, 16J00600, 17K05384] Funding Source: KAKEN
Hard X-ray (>= 10 keV) observations of active galactic nuclei (AGNs) can shed light on some of the most obscured episodes of accretion onto supermassive black holes. The 70-month Swift/BAT all-sky survey, which probes the 14-195 keV energy range, has currently detected 838 AGNs. We report here on the broadband X-ray (0.3-150 keV) characteristics of these AGNs, obtained by combining XMM-Newton, Swift/XRT, ASCA, Chandra, and Suzaku observations in the soft X-ray band (<= 10 keV) with 70-month averaged Swift/BAT data. The nonblazar AGNs of our sample are almost equally divided into unobscured (N-H < 10(22)cm(-2)) and obscured (N-H >= 10(22) cm(-2)) AGNs, and their Swift/BAT continuum is systematically steeper than the 0.3-10 keV emission, which suggests that the presence of a high-energy cutoff is almost ubiquitous. We discuss the main X-ray spectral parameters obtained, such as the photon index, the reflection parameter, the energy of the cutoff, neutral and ionized absorbers, and the soft excess for both obscured and unobscured AGNs.
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