Iron Line Complex from Illuminated Accretion Disk Atmospheres

2009 ◽  
Author(s):  
A. Rózańska ◽  
J. Madej ◽  
Jéro^me Rodriguez ◽  
Phillippe Ferrando
Keyword(s):  
Accretion Disk ◽  
Iron Line ◽  
Line Complex

scholarly journals The origin of the strong soft excess and puzzling iron line complex in Mkn 841

2006 ◽  
Vol 327 (10) ◽  
pp. 1043-1046 ◽  
Author(s):  
P. O. Petrucci ◽  
G. Ponti ◽  
G. Matt ◽  
L. Maraschi ◽  
J. Malzac ◽  
...  
Keyword(s):  
Iron Line ◽  
Line Complex

scholarly journals A Broad Iron Line in the Chandra/HETG Spectrum of 4U 1705-44

2004 ◽  
Vol 194 ◽  
pp. 218-218
Author(s):  
T. Di Salvo ◽  
R. Iaria ◽  
M. Méndez ◽  
L. Burderi ◽  
N. R. Robba ◽  
...  
Keyword(s):  
Neutron Star ◽  
Accretion Disk ◽  
Iron Line ◽  
Preliminary Results

We present preliminary results from a Chandra 30 ks observation of the atoll sourco 4U 1705 44. In particular we concentrate on the study of the iron Kα line, using the HEG spectrometer. The iron Kα line at ~ 6.6 keV is found to be intrinsically broad (FWHM ~ 1.7 keV); its width can be explained by reflection from a cold accretion disk extending down to ~ 17 km from the neutron star center or by Compton broadening in the hotter (~ 3 – 4 keV) corona.

scholarly journals The origin of the strong soft excess and puzzling iron line complex in Mkn 841

2007 ◽  
Author(s):  
P. O. Petrucci ◽  
G. Ponti ◽  
G. Matt ◽  
L. Maraschi ◽  
J. Malzac ◽  
...  
Keyword(s):  
Iron Line ◽  
Line Complex

Polarization properties of iron emission lines as a tool to identify the finite thickness of disks with moderately super-eddington accretion rate

2021 ◽  
pp. 2150074
Author(s):  
Ze-Yuan Tang ◽  
Ye-Fei Yuan
Keyword(s):  
Accretion Disk ◽  
Accretion Disks ◽  
Accretion Rate ◽  
Finite Thickness ◽  
Polarization Degree ◽  
Iron Line ◽  
Disk Thickness ◽  
X Ray ◽  
X Ray Binaries ◽  
Polarized Radiation

The Fe-K[Formula: see text] fluorescence lines are commonly observed in AGNs and X-ray binaries. The lines are believed to be originated from the reflection of the hard X-ray continuum near the inner-most region of the accretion disks of black holes. The geometry of the accretion disk is usually assumed to be infinitely thin, but this assumption is not appropriate when the accretion rate is moderately super-Eddington. With the increase of the accretion rate, the disk becomes thick, which will significantly affect the properties of the fluorescence lines. For instance, the polarized radiation is strongly depended on the geometry of the accretion disk. In this work, based on the lamp-post model, we study the polarization properties of the relativistic Fe-K[Formula: see text] lines from thick disks in the framework of fully general relativity. We find that with the increase of the disk thickness, the polarization degree (PD) at the blue edge of the iron line increase significantly, and there appears a peak at the profile of the PD of the iron emission line, which at most is one order higher that of the line from the thin disk. Thus, the polarization properties of relativistic broad Fe-K[Formula: see text] lines can be used to as a tool to diagnose the disk thickness.

scholarly journals Estimation of Relativistic Accretion Disk Parameters From Iron Line Emission

2001 ◽  
Vol 547 (2) ◽  
pp. 649-666 ◽  
Author(s):  
V. I. Pariev ◽  
B. C. Bromley ◽  
W. A. Miller
Keyword(s):  
Accretion Disk ◽  
Line Emission ◽  
Iron Line

scholarly journals Unveiling the broad band X-ray continuum and iron line complex in Mrk 841

2007 ◽  
Vol 470 (3) ◽  
pp. 889-902 ◽  
Author(s):  
P. O. Petrucci ◽  
G. Ponti ◽  
G. Matt ◽  
A. L. Longinotti ◽  
J. Malzac ◽  
...  
Keyword(s):  
Broad Band ◽  
Iron Line ◽  
X Ray ◽  
Line Complex
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