Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-05-04
Astrophys.J.698:1740-1748,2009
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Accepted for publication in ApJ. 11 pages, 6 figures (5 color)
Scientific paper
10.1088/0004-637X/698/2/1740
We present the X-ray broadband power spectral density function (PSD) of the X-ray-luminous Seyfert IC 4329a, constructed from light curves obtained via Rossi X-ray Timing Explorer monitoring and an XMM-Newton observation. Modeling the 3-10 keV PSD using a broken power-law PSD shape, a break in power-law slope is significantly detected at a temporal frequency of 2.5(+2.5,-1.7) * 10^-6 Hz, which corresponds to a PSD break time scale T_b of 4.6(+10.1,-2.3) days. Using the relation between T_b, black hole mass M_BH, and bolometric luminosity as quantified by McHardy and coworkers, we infer a black hole mass estimate of M_BH = 1.3(+1.0,-0.3) * 10^8 solar masses and an accretion rate relative to Eddington of 0.21(+0.06,-0.10) for this source. Our estimate of M_BH is consistent with other estimates, including that derived by the relation between M_BH and stellar velocity dispersion. We also present PSDs for the 10-20 and 20-40 keV bands; they lack sufficient temporal frequency coverage to reveal a significant break, but are consistent with the same PSD shape and break frequency as in the 3-10 keV band.
No associations
LandOfFree
The X-ray Power Spectral Density Function and Black Hole Mass Estimate for the Seyfert AGN IC 4329a 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 The X-ray Power Spectral Density Function and Black Hole Mass Estimate for the Seyfert AGN IC 4329a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The X-ray Power Spectral Density Function and Black Hole Mass Estimate for the Seyfert AGN IC 4329a will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-449923