Intra-day variability of three Seyfert Galaxies measured with XMM-Newton

Ashutosh Tripathi, Paul J. Wiita, Alok C. Gupta +2

We present and analyze the variability of three Seyfert galaxies on intra-day timescales. We have analyzed in a uniform manner the 38 longest ( $>30$ ks) observations made for NGC…