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Short timescale UV variability study in NGC 4151 using IUE data

Doddamani, Vijayakumar H.; Vedavathi, P.

IUE has made very successful long term and intense short time-scale monitoring spectroscopic study of NGC 4151, a Seyfert 1 galaxy for over nearly 18 years from its launch in 1978 to 1996. The long-term observations have been useful in understanding the complex relation between UV continuum and emission line variability Seyfert galaxies. In this p…