X-ray evidence for a mildly relativistic and variable outflow in the luminous Seyfert 1 galaxy Mrk 509

被引：74

作者：

Cappi, M. ^{[1
]}

Tombesi, F. ^{[1
,2
,3
,4
]}

Bianchi, S. ^{[5
]}

Dadina, M. ^{[1
]}

Giustini, M. ^{[1
,2
,6
]}

Malaguti, G. ^{[1
]}

Maraschi, L. ^{[7
]}

Palumbo, G. G. C. ^{[2
]}

Petrucci, P. O. ^{[8
]}

Ponti, G. ^{[9
]}

Vignali, C. ^{[2
]}

Yaqoob, T. ^{[3
,4
]}

机构：

[1] INAF IASF Bologna, I-40129 Bologna, Italy

[2] Univ Bologna, Dipartmento Astron, I-40127 Bologna, Italy

[3] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[4] NASA, Goddard Space Flight Ctr, High Energy Astrophys Lab, Greenbelt, MD 20771 USA

[5] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy

[6] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[7] Osserv Astron Brera, INAF, I-20121 Milan, Italy

[8] Univ Grenoble 1, CNRS, UMR 5571, Lab Astrophys Grenoble, F-38041 Grenoble, France

[9] Univ Paris 07, APC, F-75205 Paris, France

来源：

ASTRONOMY & ASTROPHYSICS | 2009年 / 504卷 / 02期

关键词：

galaxies: active; X-rays: galaxies; accretion; accretion disks; thechniques: spectroscopic; line: formation; galaxies: Seyfert; ACTIVE GALACTIC NUCLEI; ACCRETION DISK WINDS; XMM-NEWTON; ABSORPTION-LINES; PHOTOIONIZED GAS; BLACK-HOLE; FE LINE; SPECTRUM; AGN; ABSORBERS;

D O I：

10.1051/0004-6361/200912137

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. There is growing evidence for the presence of blueshifted Fe K absorption lines in a number of radio-quiet AGNs and QSOs. These may be fundamental to probe flow dynamics near supermassive black holes. Aims. Here we aim to verify and better characterise the existence of such Fe K absorption at similar to 8-10 keV in the luminous Seyfert 1 galaxy Mrk 509, one of the most promising target for these studies. Methods. We present a comprehensive spectral analysis of the six XMM-Newton observations of the source (for a total of similar to 200 ks), focusing on a detailed and systematic search for absorption features in the high-energy data. Results. We detect several absorption features at rest-frame energies similar to 8-8.5 keV and similar to 9.7 keV. The lines are consistent with being produced by H-like iron K alpha and K beta shell absorptions associated with an outflow with a mildly relativistic velocity of similar to 0.14-0.2 c. The lines are found to be variable in energy and, marginally, in intensity, implying variations in either the column density, geometry and/or ionization structure of the outflow are common.

引用

页码：401 / 407

页数：7

共 42 条

[1] Fe XXV and Fe XXVI lines from low-velocity, photoionized gas in the X-ray spectra of active galactic nuclei [J].