Search Publications

On the reality of broad iron L lines from the narrow line Seyfert 1 galaxies 1H 0707-495 and IRAS 13224-3809.

Misra, R.; Dewangan, G. C.; Pawar, P. K. +2 more

We performed time resolved spectroscopy of 1H0707-495 and IRAS 13224-3809 using long XMM-Newton observations. These are strongly variable narrow line Seyfert 1 galaxies and show broad features around 1 keV that has been interpreted as relativistically broad Fe L$\alpha$ lines. Such features are not clearly observed in other AGN despite sometimes h…

UV and X-ray variability of the narrow-line Seyfert 1 galaxy Ark 564

Dewangan, Gulab C.; Kembhavi, Ajit K.; Misra, Ranjeev +3 more

We analyze eight XMM-Newton observations of the bright Narrow Line Seyfert 1 galaxy Arakelian 564 (Ark 564). These observations, separated by ∼ 6 days, allow us to look for correlations between the simultaneous ultraviolet (UV) emission (from the Optical Monitor) with not only the X-ray flux but also with different X-ray spectral parameters. The X…