Frequency-dependent time lags in the X-ray emission of the Seyfert galaxy NGC 7469

Details Frequency-dependent time lags in the X-ray emission of the Seyfert galaxy NGC 7469 Frequency-dependent time lags in the X-ray emission of the Seyfert galaxy NGC 7469

2001-06-10

arxiv.org/abs/astro-ph/0106175v1

Astronomy and Astrophysics

Astrophysics

12 pages, 2 figures, accepted for Publication in ApJL

Scientific paper

10.1086/321722

We report the discovery of time lags in the cross-spectra of the X-ray light curves of the Seyfert galaxy NGC 7469. This behavior is common in Galactic black hole and neutron star binaries, and is in the sense that harder X-rays are delayed with respect to the soft with a time lag approximately proportional to the Fourier period. At the longest period probed by our observation we find a time lag of approximately 3.5 hours between the 2-4 and 4-10 keV X-rays. A similar lag and period dependence is found comparing the 2-4 and 10-15 keV light curves, albeit with less significance. We find the coherence function of the light curves to be close to 1. The implications of these results for the X-ray production mechanism in active galactic nuclei (AGN) is discussed.

Affiliated with

Also associated with

No associations

Rating

Frequency-dependent time lags in the X-ray emission of the Seyfert galaxy NGC 7469 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 Frequency-dependent time lags in the X-ray emission of the Seyfert galaxy NGC 7469, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency-dependent time lags in the X-ray emission of the Seyfert galaxy NGC 7469 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-560343