Magnetic origin of black hole winds across the mass scale

被引：71

作者：

Fukumura, Keigo ^{[1
]}

Kazanas, Demosthenes ^{[2
]}

Shrader, Chris ^{[2
,3
]}

Behar, Ehud ^{[4
,5
]}

Tombesi, Francesco ^{[2
,5
,6
]}

Contopoulos, Ioannis ^{[7
]}

机构：

[1] James Madison Univ, 800 South Main St, Harrisonburg, VA 22807 USA

[2] NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA

[3] Univ Space Res Assoc, 10211 Wincopin Circle,Suite 500, Columbia, MD 21044 USA

[4] Technion Israel Inst Technol, Phys Dept, IL-3200003 Haifa, Israel

[5] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[6] Univ Roma Tor Vergata, Dipartimento Fis, Via Ric Sci 1, I-00133 Rome, Italy

[7] Acad Athens, Soranou Efesiou 2, GR-11527 Athens, Greece

来源：

NATURE ASTRONOMY | 2017年 / 1卷 / 04期

关键词：

ACTIVE GALACTIC NUCLEI; ACCRETION DISK WINDS; X-RAY ABSORBERS; GRO J1655-40; DRIVEN JETS; GRATING SPECTROMETER; WARM ABSORBERS; OUTFLOWS; ABSORPTION; GALAXIES;

D O I：

10.1038/s41550-017-0062

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Invariably, black hole accretion disks seem to produce plasma outflows that result in blue-shifted absorption features in their spectra(1). The X-ray absorption-line properties of these outflows are diverse, ranging in velocity from non-relativistic(2) (-300 km s(-1)) to sub-relativistic(3) (-0.1c, where c is the speed of light) and a similarly broad range in the ionization states of the wind plasma(2,4). We report here that semi-analytical, self-similar magnetohydrodynamic wind models that have successfully accounted for the X-ray absorber properties of supermassive black holes(5,6) also offer a good fit to the highresolution X-ray spectrum of the accreting stellar-mass black hole GRO J1655-40. This provides an explicit theoretical argument of their magnetohydrodynamic origin (aligned with earlier observational claims)(7) and supports the notion of a universal magnetic structure of the observed winds across all known black hole sizes.

引用

页数：6

共 44 条

[1]

[Anonymous], 2008, ASTROPHYS J, V680, P1359

[2] COMPTON HEATED WINDS AND CORONAE ABOVE ACCRETION DISKS .1. DYNAMICS [J].