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SUZAKU OBSERVATION OF A HARD EXCESS IN 1H 0419-577: DETECTION OF A COMPTON-THICK PARTIAL-COVERING ABSORBER
被引:52
作者:
Turner, T. J.
[1
,2
]
Miller, L.
[3
]
Kraemer, S. B.
[2
,4
]
Reeves, J. N.
[5
]
Pounds, K. A.
[6
]
机构:
[1] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA
[2] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA
[3] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[4] Catholic Univ Amer, Dept Phys, Inst Astrophys & Computat Sci, Washington, DC 20064 USA
[5] Univ Keele, Sch Phys & Geog Sci, Astrophys Grp, Keele ST5 5BG, Staffs, England
[6] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
关键词:
galaxies: active;
galaxies: individual (1H 0419-577);
galaxies: Seyfert;
X-rays: galaxies;
X-RAY-SPECTRUM;
ACTIVE GALACTIC NUCLEI;
SEYFERT-GALAXIES;
XMM-NEWTON;
ABSORPTION LINES;
COLD MATTER;
BLACK-HOLE;
EMISSION;
VARIABILITY;
AGN;
D O I:
10.1088/0004-637X/698/1/99
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
We present results from a 200 ks Suzaku observation of 1H 0419-577 taken during 2007 July. The source shows a strong excess of counts above 10 keV compared to the extrapolation of models based on previous data in the 0.5-10 keV band. The "hard excess" in 1H 0419-577 can be explained by the presence of a Compton-thick partial-covering absorber that covers similar to 70% of the source. The Compton-thick gas likely originates from a radius inside of the optical broad-line region and may form part of a clumpy disk wind. The fluorescent Fe K alpha luminosity measured by Suzaku is consistent with that expected from an equatorial disk wind.
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页码:99 / 105
页数:7
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