2010ApJ...724...26M


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.14CEST12:56:22

2010ApJ...724...26M - Astrophys. J., 724, 26-38 (2010/November-3)

The X-ray power spectral density function of the Seyfert active galactic nucleus NGC 7469.

MARKOWITZ A.

Abstract (from CDS):

We present the broadband X-ray power spectral density (PSD) function of the X-ray-luminous Seyfert 1.2 NGC 7469, measured from Rossi X-ray Timing Explorer monitoring data and two XMM-Newton observations. We find significant evidence for a turnover in the 2-10 keV PSD at a temporal frequency of 2.0+3.0 –0.8x10–6 Hz or 1.0+3.0–0.6x 10–6 Hz, depending on the exact form of the break (sharply broken or slowly bending power law, respectively). The "surrogate" Monte Carlo method of Press et al. was used to map out the probability distributions of PSD model parameters and obtain reliable uncertainties (68% confidence limits quoted here). The corresponding break timescale of 5.8±3.5 days or 11.6+17.5–8.7days, respectively, is consistent with the empirical relation between PSD break timescale, black hole mass, and bolometric luminosity of McHardy et al. Compared to the 2-10 keV PSD, the 10-20 keV PSD has a much flatter shape at high temporal frequencies, and no PSD break is significantly detected, suggesting an energy-dependent evolution not unlike that exhibited by several Galactic black hole systems.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: Seyfert - X-rays: individual: NGC 7469

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 4253 Sy1 12 18 26.5155239433 +29 48 46.518670434   14.34 13.57     ~ 952 1
2 ESO 383-35 Sy1 13 35 53.7686909139 -34 17 44.139127597   13.89 13.61 8.9   ~ 1400 0
3 [GHJ2008] 3 HXB 16 50 00.980 -49 57 43.60     11.89     K4V 358 0
4 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3997 0
5 UGC 12163 Sy1 22 42 39.3364258078 +29 43 31.301194419   14.86 14.16     ~ 632 1
6 NGC 7469 Sy1 23 03 15.674 +08 52 25.28 12.60 13.00 12.34     ~ 1922 3

    Equat.    Gal    SGal    Ecl

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2021.04.14-12:56:22

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