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Long term optical and X-ray variability of the Seyfert galaxy Markarian 79
E. Breedt, P. Arévalo, I. M. McHardy +8
We present the results of concurrent X-ray and optical monitoring of the Seyfert 1 galaxy Mrk 79 over a period of more than five years. We find that on short to medium time-scales…
The Infrared Cloud Monitor for the MAGNUM Robotic Telescope at Haleakala
M. Suganuma, Y. Kobayashi, N. Okada +6
We present the most successful infrared cloud monitor for a robotic telescope. This system was originally developed for the MAGNUM 2-m telescope, which has been achieving unmanned…
Multiple Regression Analysis of the Variable Component in the Near-Infrared Region for Type 1 AGN MCG+08-11-011
Hiroyuki Tomita, Yuzuru Yoshii, Yukiyasu Kobayashi +6
We propose a new method of analysing a variable component for type 1 active galactic nuclei (AGNs) in the near-infrared wavelength region. This analysis uses a multiple regression…
First Detection of Near-Infrared Intraday Variations in the Seyfert 1 Nucleus NGC4395
T. Minezaki, Y. Yoshii, Y. Kobayashi +6
We carried out a one-night optical V and near-infrared JHK monitoring observation of the least luminous Seyfert 1 galaxy, NGC4395, on 2004 May 1, and detected for the first time th…
Reverberation Measurements of the Inner Radius of the Dust Torus in Nearby Seyfert 1 Galaxies
M. Suganuma, Y. Yoshii, Y. Kobayashi +6
The most intense monitoring observations yet made in the optical (UBV) and near-infrared (JHK) wave bands were carried out for nearby Seyfert1 galaxies of NGC 5548, NGC 4051, NGC 3…