Iron-Line Emission as a Probe of Bardeen-Petterson Accretion Disks

Details Iron-Line Emission as a Probe of Bardeen-Petterson Accretion Disks Iron-Line Emission as a Probe of Bardeen-Petterson Accretion Disks

2005-07-12

arxiv.org/abs/astro-ph/0507309v1

Astrophys.J.635:157-166,2005

Astronomy and Astrophysics

Astrophysics

13 pages, 11 figures, submitted to ApJ

Scientific paper

10.1086/491616

In this work we show that Bardeen-Petterson accretion disks can exhibit unique, detectable features in relativistically broadened emission line profiles. Some of the unique characteristics include inverted line profiles with sharper red horns and softer blue horns and even profiles with more than 2 horns from a single rest-frame line. We demonstrate these points by constructing a series of synthetic line profiles using simple two-component disk models. We find that the resultant profiles are very sensitive to the two key parameters one would like to constrain, namely the Bardeen-Petterson transition radius r_{BP} and the relative tilt \beta between the two disk components over a range of likely values [10 < r_{BP}/(GM/c^2) < 40 ; 15deg < \beta < 45deg]. We use our findings to show that some of the ``extra'' line features observed in the spectrum of the Seyfert-I galaxy MCG--6-30-15 may be attributable to a Bardeen-Petterson disk structure. Similarly, we apply our findings to two likely Bardeen-Petterson candidate Galactic black holes - GRO J1655-40 and XTE J1550-564. We provide synthetic line profiles of these systems using observationally constrained sets of parameters. Although we do not formally fit the data for any of these systems, we confirm that our synthetic spectra are consistent with current observations.

Affiliated with

Also associated with

No associations

Rating

Iron-Line Emission as a Probe of Bardeen-Petterson Accretion Disks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Iron-Line Emission as a Probe of Bardeen-Petterson Accretion Disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Iron-Line Emission as a Probe of Bardeen-Petterson Accretion Disks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-294646