STRATIFIED MAGNETICALLY DRIVEN ACCRETION-DISK WINDS AND THEIR RELATIONS TO JETS

被引:61
作者
Fukumura, Keigo [1 ,2 ]
Tombesi, Francesco [2 ,3 ]
Kazanas, Demosthenes [2 ]
Shrader, Chris [2 ,4 ]
Behar, Ehud [5 ]
Contopoulos, Ioannis [6 ]
机构
[1] Univ Maryland, Baltimore Cty UMBC CRESST, Baltimore, MD 21250 USA
[2] NASA, Astrophys Sci Div, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[3] Univ Maryland, Dept Astron, College Pk, MD 20742 USA
[4] Univ Space Res Assoc, Columbia, MD 21044 USA
[5] Technion, Dept Phys, IL-32000 Haifa, Israel
[6] Acad Athens, Res Ctr Astron, Athens 11527, Greece
基金
以色列科学基金会;
关键词
accretion; accretion disks; black hole physics; galaxies: active; quasars: absorption lines; X-rays: galaxies; X-RAY-ABSORPTION; UNIFIED MODEL; MASS OUTFLOWS; SIMULATIONS; COLLIMATION; CHANDRA; NUCLEI; QUASAR; ACCELERATION; ABSORBERS;
D O I
10.1088/0004-637X/780/2/120
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We explore the poloidal structure of two-dimensional magnetohydrodynamic (MHD) winds in relation to their potential association with the X-ray warm absorbers (WAs) and the highly ionized ultra-fast outflows (UFOs) in active galactic nuclei (AGNs), in a single unifying approach. We present the density n(r, theta), ionization parameter xi (r, theta), and velocity structure upsilon(r, theta) of such ionized winds for typical values of their fluid-to-magnetic flux ratio, F, and specific angular momentum, H, for which wind solutions become super-Alfvenic. We explore the geometrical shape of winds for different values of these parameters and delineate the values that produce the widest and narrowest opening angles of these winds, quantities necessary in the determination of the statistics of AGN obscuration. We find that winds with smaller H show a poloidal geometry of narrower opening angles with their Alfven surface at lower inclination angles and therefore they produce the highest line of sight (LoS) velocities for observers at higher latitudes with the respect to the disk plane. We further note a physical and spatial correlation between the X-ray WAs and UFOs that form along the same LoS to the observer but at different radii, r, and distinct values of n, xi, and upsilon consistent with the latest spectroscopic data of radio-quiet Seyfert galaxies. We also show that, at least in the case of 3C 111, the winds' pressure is sufficient to contain the relativistic plasma responsible for its radio emission. Stratified MHD disk winds could therefore serve as a unique means to understand and unify the diverse AGN outflows.
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页数:11
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