Observations of the Seyfert 1 AGNs Zw 229.015 and Mrk 493 vis-a-vis theoretical predictions
Abstract
By using the archival XMM-Newton and Swift data of the nearby Seyfert 1 AGNs Zw 229.015 and Mrk 493, we study both the spectral and temporal properties of the central blackholes in remarkable detail. The energy spectra show soft excess emission (much stronger for Mrk 493) which is consistent with both inverse comptonisation from a cold corona and relativistically blurred reflection close to a black hole. From the time lag estimate between the soft and the hard X-rays, we compute the size of the corona system to be about 20Rg for Zw 229.015. On the other hand, on longer time-scale using the Swift archival data for Zw 229.015, a time delay between the UVW2 and X-ray emissions could not be established with certainty although apparently the source appears to be brighter in UV when softer in X-rays. The UV/X-ray emissions from Mrk 493 show strong correlation that is consistent with the prediction of Comptonisation of seed UV photons in the hot corona.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E..25A