Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2009-06-05
Astrophys.J.700:1042-1046,2009
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
accepted for the publication in The Astrophysical journal, 5 pages
Scientific paper
10.1088/0004-637X/700/2/1042
We investigate the energy-time lag dependence of the source NGC 4593 using XMM-{\it Newton}/EPIC-pn data. We found that the time lag dependency is linear in nature with respect to the logarithm of different energy bands. We also investigate the frequency dependent time lags and identify that at some frequency range (5 $\times$ 10$^{-5}$ Hz -- 2 $\times$ 10$^{-4}$ Hz) the X-ray emission is highly coherent, mildly frequency dependent and very strongly energy dependent. These observations can be explained in the frame work of the thermal Comptonization process and they indicate a truncated accretion disk very close to the black hole. We discuss the plausible spectral state to explain the phenomenon and conclude that the observed properties bear a close resemblance to the intermediate state or the steep power-law state, found in galactic black hole sources.
Agrawal Vivek K.
Rao Ravi A.
Sriram Kandulapati
No associations
LandOfFree
Energy Dependent time lags in the Seyfert 1 galaxy NGC 4593 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 Energy Dependent time lags in the Seyfert 1 galaxy NGC 4593, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy Dependent time lags in the Seyfert 1 galaxy NGC 4593 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-522176