The Inner Size of the Dust Torus in the Seyfert 1 Galaxy NGC 4151

Details The Inner Size of the Dust Torus in the Seyfert 1 Galaxy NGC 4151 The Inner Size of the Dust Torus in the Seyfert 1 Galaxy NGC 4151

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..360...79m&link_type=abstract

AGN Variability from X-Rays to Radio Waves ASP Conference Series, Vol. 360, Proceedings of the conference held 14-16 June, 2004

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Scientific paper

The most intense optical and near-infrared monitoring observations yet made were carried out on the Seyfert 1 galaxy NGC 4151 using the multi-color imaging photometer (MIP) mounted on the MAGNUM telescope. The lag time between the V and K light curves at the flux minimum in 2001 was precisely 48^{+2}_{-3} days using a cross-correlation analysis. The correlation between the optical luminosity of an active galactic nucleus (AGN) and the lag time between the UV/optical and the near-infrared light curves is presented for NGC 4151 in combination with previous lag-time measurements of NGC 4151 and other AGNs in the literature. The correlation is interpreted as thermal dust reverberation in the AGNs tep{mine04}.

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