Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004head....8.1518s&link_type=abstract
American Astronomical Society, HEAD meeting #8, #15.18; Bulletin of the American Astronomical Society, Vol. 36, p.1200
Astronomy and Astrophysics
Astronomy
Scientific paper
In the context of a relativistic hot spot model, we investigate different physical mechanisms to explain the behavior of quasi-periodic oscillations (QPOs) from accreting black holes. The black hole mass and angular momentum give the geodesic coordinate frequencies, while the disk inclination, hot spot size, shape, and overbrightness give the amplitudes of the different peaks, as determined by a three-dimensional ray-tracing calculation. Here we include additional features to explain the broadening of the QPO peaks as well as the damping of higher frequency harmonics in the power spectrum. Four primary pieces are developed: the addition of multiple hot spots with random phases, a finite width in the distribution of geodesic orbits, Poisson sampling of the detected photons, and the scattering of photons from the hot spot through a corona around the disk. Finally, the complete model is used to fit the observed power spectra of both type A and type B QPOs seen in XTE J1550-564, giving confidence limits on each of the model parameters.
This work has beed supported by NASA grant NAG5-13306.
No associations
LandOfFree
Features of the High Frequency QPO Power Spectrum in Accreting Black Holes 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 Features of the High Frequency QPO Power Spectrum in Accreting Black Holes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Features of the High Frequency QPO Power Spectrum in Accreting Black Holes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1176564